In the staff details with availability, instead of having a set schedule of one week for setting availability, it would be more helpful to have an ongoing calendar where you can change the staff person's availability for certain days and times. There are times when a regular schedule applies, but other times when it's just easier to block out certain days and times that don't flow with the regular schedule. Then you don't have to worry about people still being able to schedule because something was missed on your synced calendar because you can adjust it based on the actual day (not just the same day of the week). (See calendly for a good example.)