One of the most troubling things for children who have parents going through a divorce is figuring out how to handle the transitions that are coming. They might worry about how they're going to be able to move from one house to the other without always feeling like they're starting over again.
As their parents, you and your ex will have to work together to come up with a plan to help make things as easy as you can for them. There are several ways you can do this. Trying to come up with the terms of the parenting plan quickly when you decide to divorce is beneficial since it lessens the time of uncertainty and gives them a solid plan to count on.
You and your ex might need to sit down and have a group discussion with them. Some children worry that they will have to choose between parents. By talking to them together, you're reinforcing the fact that they will still have both parents involved in their life.
Make a point of talking to the children about how you want them to have a meaningful relationship with both parents. Don't badmouth your ex because children can sometimes take those statements to heart, which could negatively impact them.
If possible, discuss the schedule with them, so they know when they will be with each parent. Try not to have them pack a bag to go back and forth. Some items, such as a special lovey will need to go from house to house, but each parent should have at least basic items like toothbrushes and clothing for the children, so they don't have to keep moving.
The goal throughout the child custody case is to do what's best for the children. You want to give them an environment they can thrive in.