In certain instances, the Family Court can modify prior agreements and Court Orders. Generally speaking, matters relating to the divorce and property division are not subject to modification. However, certain forms of support, particularly alimony and child support are subject to modification based upon a substantial change of conditions. Also, all matters relative to children (i.e., child custody, parenting time, child support and the like) are modifiable based upon changed circumstances which have materially affected the children. It is general good advice to do what you want to do the first time around — it is much easier to get the job done in the first instance, rather than to come back later and to change a prior Order.