When compiling a family schedule, remember that there are only 24 hours in a day. If you pile up too many activities and outings, you diminish your family's quality of life. Certainly, some kids will want to pursue soccer, ballet, painting and horseback riding all at the same time, but it's up to you to teach the importance of prioritizing. Talk with them about what they would enjoy the most and can commit to long-term, and go from there.
If you need to free up time on the family calendar, first assess priorities, such as school and doctor appointments. When whittling down further, consider the importance of certain events to the people involved, any cost associated with canceling and time invested.