Accountant needed for Quickbooks

I've moved across to Quickbooks and need to Categorise then Reconcile approx 500 transactions from 1 Mar 2023 to current. I've imported all invoices that were in my Wave Accounting system but can't figure how to mark them as being paid from the transactions.

Apparently it's better to not apply all the deposits to the invoices and rather create a debtor and allocate the payments to the debtor and create a journal entry to settle the balance - I have no idea what that means.

I also have a PayPal account and GoCardless account that needs to be reconciled.

Please let me know if you can help and what extra information you may need to Submit your Proposal.

I need this completed by Friday, 21 February and can supply Closing balances from last financials