Time slots

[dragon2309]

Hi, i am making a dataabse to accomodate driving lesson bookings. i have a massive table with thousands of entries for dates and time slots for each day. Each driving instructor has a slot on each date/time combination. What i need to happen is that on a form, i would select say "2hours" for the lesson length, and then it would fill in the customer_ID on each of the 30 min slots corrsponding to how long the lesosn was. 2 hours would be 4 slots etc...

I know it spossible but dont know how. Can you help...?


dragon2309