You don't. The Tracker isn't used to schedule events, it's used to record parenting time as it occurs. (The Calendar is where you schedule repeating events.)

In general, Tracker entries are made after the parenting time or visitation has occurred.

These entries are used to generate the statistics that determine how well the parenting plan is being complied with. If you pre-schedule time in the Tracker, the statistics that OPTIMAL generates won't be accurate.