If you are creating a visitation schedule as part of your separation agreement, your time sharing arrangement can be almost anything you want it to be, as long as it's reasonable. (info.legalzoom.com)
You and your spouse can agree to an expense - sharing arrangement as part of a separation agreement, sometimes referred to as a marital settlement agreement. (info.legalzoom.com)
It's also important to note that very often part of the separation agreement that deals with spouses» work benefits speaks to the issue of remarriage. (moneysense.ca)