On the second tab of the route properties, you can create a table of its schedules. The table contains all possible departures for the route with the time of the stops visits. Based on the timetables, rides are created automatically on scheduled days.
A separate schedule is a list that contains information about the time of each visit of the route. One route can have from one to several hundred schedules depending on how often it travels, and how many variations of schedules it has on different days of the week and seasons.