The journey might start here.

(1) In any proceeding to establish or modify a judgment providing for parenting time with a child, except for matters filed under ORS 107.700 (Short title) to 107.735 (Duties of State Court Administrator), there shall be developed and filed with the court a parenting plan to be included in the judgment. A parenting plan may be either general or detailed.

(2) A general parenting plan may include a general outline of how parental responsibilities and parenting time will be shared and may allow the parents to develop a more detailed agreement on an informal basis. However, a general parenting plan must set forth the minimum amount of parenting time and access a noncustodial parent is entitled to have.

(3) A detailed parenting plan may include, but need not be limited to, provisions relating to:

(a) Residential schedule;

(b) Holiday, birthday and vacation planning;

(c) Weekends, including holidays, and school in-service days preceding or following weekends;

(d) Decision-making and responsibility;

(e) Information sharing and access;

(f) Relocation of parents;

(g) Telephone access;

(h) Transportation; and

(i) Methods for resolving disputes.

ORS 107.105 is a huge statute that provides detailed provisions governing not only the provisions of a divorce or separation judgment but also provisions regarding attorney fees. Rather than quote select parts, the statute may be reviewed in its entirety at the link below.

(1) The court may at any time after a judgment of annulment or dissolution of marriage or of separation is granted, upon the motion of either party and after service of notice on the other party in the manner provided by ORCP 7, and after notice to the Division of Child Support when required under subsection (9) of this section:

(a) Set aside, alter or modify any portion of the judgment that provides for the appointment and duties of trustees, for the custody, parenting time, visitation, support and welfare of the minor children and the children attending school, as defined in ORS 107.108 (Support or maintenance for child attending school), including any health or life insurance provisions, for the support of a party or for life insurance under ORS 107.820 (Support order as insurable interest) or 107.830 (Physical examination may be ordered);

(b) Make an order, after service of notice to the other party, providing for the future custody, support and welfare of minor children residing in the state, who, at the time the judgment was given, were not residents of the state, or were unknown to the court or were erroneously omitted from the judgment;

(c) Terminate a duty of support toward any minor child who has become self-supporting, emancipated or married;

(d) After service of notice on the child in the manner provided by law for service of a summons, suspend future support for any child who has ceased to be a child attending school as defined in ORS 107.108 (Support or maintenance for child attending school); and

(e) Set aside, alter or modify any portion of the judgment that provides for a property award based on the enhanced earning capacity of a party that was awarded before October 23, 1999. A property award may be set aside, altered or modified under this paragraph.

...

(1) Except as provided in subsection (6) of this section, in determining custody of a minor child under ORS 107.105 (Provisions of judgment) or 107.135 (Vacation or modification of judgment), the court shall give primary consideration to the best interests and welfare of the child. In determining the best interests and welfare of the child, the court shall consider the following relevant factors:

(a) The emotional ties between the child and other family members;

(b) The interest of the parties in and attitude toward the child;

(c) The desirability of continuing an existing relationship;

(d) The abuse of one parent by the other;

(e) The preference for the primary caregiver of the child, if the caregiver is deemed fit by the court; and

(f) The willingness and ability of each parent to facilitate and encourage a close and continuing relationship between the other parent and the child. However, the court may not consider such willingness and ability if one parent shows that the other parent has sexually assaulted or engaged in a pattern of behavior of abuse against the parent or a child and that a continuing relationship with the other parent will endanger the health or safety of either parent or the child.

...

(1) If a child is born to an unmarried person and parentage has been established under ORS 109.065 (Establishing parentage), or if a child is born to a married person by a person other than the birth mother’s spouse and parentage between the person and the child has been established under ORS 109.065 (Establishing parentage), either parent may initiate a civil proceeding to determine the custody or support of, or parenting time with, the child. The proceeding shall be brought in the circuit court of the county in which the child resides or is found or in the circuit court of the county in which either parent resides. The parents have the same rights and responsibilities regarding the custody and support of, and parenting time with, their child that married or divorced parents would have, and the provisions of ORS 107.094 (Forms for restraining order and request for hearing) to 107.449 (Transfer of proceeding under ORS 107.135 to auxiliary court) that relate to custody, support and parenting time, the provisions of ORS 107.755 (Court-ordered mediation) to 107.795 (Availability of other remedies) that relate to mediation procedures, and the provisions of ORS 107.810 (Policy), 107.820 (Support order as insurable interest) and 107.830 (Physical examination may be ordered) that relate to life insurance, apply to the proceeding.

...

(1) Except as otherwise provided in subsection (9) of this section, any person, including but not limited to a related or nonrelated foster parent, stepparent, grandparent or relative by blood or marriage, who has established emotional ties creating a child-parent relationship or an ongoing personal relationship with a child may petition or file a motion for intervention with the court having jurisdiction over the custody, placement or guardianship of that child, or if no such proceedings are pending, may petition the court for the county in which the child resides, for an order providing for relief under subsection (3) of this section.

(2)(a) In any proceeding under this section, there is a presumption that the legal parent acts in the best interest of the child.

(b) In an order granting relief under this section, the court shall include findings of fact supporting the rebuttal of the presumption described in paragraph (a) of this subsection.

(c) The presumption described in paragraph (a) of this subsection does not apply in a proceeding to modify an order granting relief under this section.

(3)(a) If the court determines that a child-parent relationship exists and if the court determines that the presumption described in subsection (2)(a) of this section has been rebutted by a preponderance of the evidence, the court shall grant custody, guardianship, right of visitation or other right to the person having the child-parent relationship, if to do so is in the best interest of the child. The court may determine temporary custody of the child or temporary visitation rights under this paragraph pending a final order.

(b) If the court determines that an ongoing personal relationship exists and if the court determines that the presumption described in subsection (2)(a) of this section has been rebutted by clear and convincing evidence, the court shall grant visitation or contact rights to the person having the ongoing personal relationship, if to do so is in the best interest of the child. The court may order temporary visitation or contact rights under this paragraph pending a final order.

(4)(a) In deciding whether the presumption described in subsection (2)(a) of this section has been rebutted and whether to award visitation or contact rights over the objection of the legal parent, the court may consider factors including, but not limited to, the following, which may be shown by the evidence:

(A) The petitioner or intervenor is or recently has been the child’s primary caretaker;

(B) Circumstances detrimental to the child exist if relief is denied;

(C) The legal parent has fostered, encouraged or consented to the relationship between the child and the petitioner or intervenor;

(D) Granting relief would not substantially interfere with the custodial relationship; or

(E) The legal parent has unreasonably denied or limited contact between the child and the petitioner or intervenor.

(b) In deciding whether the presumption described in subsection (2)(a) of this section has been rebutted and whether to award custody, guardianship or other rights over the objection of the legal parent, the court may consider factors including, but not limited to, the following, which may be shown by the evidence:

(A) The legal parent is unwilling or unable to care adequately for the child;

(B) The petitioner or intervenor is or recently has been the child’s primary caretaker;

(C) Circumstances detrimental to the child exist if relief is denied;

(D) The legal parent has fostered, encouraged or consented to the relationship between the child and the petitioner or intervenor; or

(E) The legal parent has unreasonably denied or limited contact between the child and the petitioner or intervenor.

...