How to set up a reccuring bill with modifications

[WaldensMusic]

I am aware of how to make an invoice both in the regular POS app and from the online dashboard. 

What I would like to do is set up a series of recurring weekly invoices that I can see through the future and modify if needed. 

This is for weekly lessons - to give a picture of the situation. 

For example - My student pays every 4 weeks in advance. 

When I set up the recurring weekly invoice it only showed me the invoices for the rest of this month, and not Decembers. I would like to pay multiple invoices in one transaction. (they pay by check in person)



Now there are some weeks where they may cancel. I would like to then take that already paid week, and apply credit (with out counting it as a new payment)  as a balance on their account or apply it for a future invoice.