Daily takeaway receipts

Hello,

We are starting a takeaway meal service in October. Everyone will come to collect their meal on a specific day. However, they will all pay in the week before, on other days. Can you bundle the receipts for the meals on the day they come to collect them, or do you have to enter the amount in your daily receipts on the day their transfer arrives in your account?

And then, related to that, the second question. Can we enter receipts from before we officially start?

Thank you in advance for your responses.