When determining child custody, courts consider various factors, including the child's best interests, the parents' ability to provide a stable environment, each parent's relationship with the child, the child's preferences (if of appropriate age), and any history of abuse or neglect.

Legal separation is a formal process that allows couples to live apart while still legally married. It addresses issues such as property division, child custody, and support, similar to a divorce. However, in a legal separation, the couple remains married, and they can choose to reconcile or pursue a divorce in the future.

Child support calculations typically consider factors such as each parent's income, the number of children, child custody arrangements, and any special needs or expenses of the child. Guidelines and formulas set by the court or specific laws in the jurisdiction are often used as a basis for determining child support amounts.

In some jurisdictions, grandparents may have legal grounds to seek visitation rights if it is deemed to be in the best interests of the child. However, the specific laws regarding grandparents' visitation rights vary by jurisdiction.

Yes, it is possible to modify child custody or support arrangements if there has been a significant change in circumstances that warrants a modification. This could include changes in income, job loss, relocation, or changes in the child's needs.