Ta for the info. I'll switch on the cancel booking button for the next session.
I'll try and nudge the developer to sort that problem about group booking out, however I think the case you refer to Norman was when people actually booked themselves in by accident. I did an additional group booking the other day for the last GP, but when done right, it won't book the booker in... but i accept it's a bit convoluted... i may try and change the booking terminology a tad to help.
I've always suggested sanctions against no-shows are needed, or payment upfront. It's easy to switch off accounts from being able to use the booking system. Very