Scheduling for group classes when someone books late

Hi,

New to Squarespace and struggling with some parts of scheduling. I'm advertising group tuition courses, in which customers sign up to the whole 7 week course at a cost of £60. 

Some customers wish to sign up late (e.g. after the first week has passed, for the remaining 6 weeks), but the course disappears from my calendar for booking after the first lesson has gone by. The only solution seems to be to remove the 'client must attend all available dates' and then it allows them to book, but it appears that they are paying £60 for one selected date only.

Is there a solution to this - where clients can book on to a currently running course for the remaining dates?

Thanks for any help!

I am also new to squarepsace and ran into this issue. If you delete just the first date of the course, I believe it then allows clients to see it on your calendar and book the remainder