I import the bank transactions to the Manager. All incoming amounts are belong to the customer’s payment. Can I recode the bank transactions to “Account Receivable” account in a specific customer name?

I import the bank transactions to the Manager. All incoming amounts are belong to the customer’s payment. Can I recode the bank transactions to “Account Receivable” account in a specific customer name?

Yes. Use a bank rule. See the Guide: Use receipt rules to categorize imported transactions | Manager. Bank rules help you post bank transactions to the right account during a statement import.
If you want to change account allocations afterwards, see Find and recode payments | Manager.