Thanks for your reply.
I've discovered that the only way that I can have users entering quotes is if I make them standard users but only give them access to customers but this means they can see everything about the customer - outstanding balance and also how long invoices are overdue etc.
Is there an external product (unlikely to be created by QB), that I can use to produce quotes that will then export the information into QB?
I guess this is more likely to be answered by another user rather than a member of staff.