Have the ability to set a static number of recurring appointments

We woulld like the 'Enable Recurring Appointments' feature to have both a maximum and minimum number of sessions so you can set a staic 12 week programme rather the user choosing 2 to 12 weeks. This would be a great feature and would open up the plugin to create set weekly programmes to force users to book for 12 weeks, and nothing less. You can then resrtict these services to certain days using the shift managment feature.