Employee bank account to be marked as primary when Bank Accounts are added through Payment Methods

For expense processing we are asking users to add their bank accounts under Payment methods (Me→ Pay→ Payment Methods) from where the bank accounts automatically flow to Expense dashboard (Manage Bank accounts). Now in case where user has multiple bank accounts, when they add a new bank account, there is no way for him/her to update/select that new bank account as Primary. We have not extended the access to users to update the bank accounts from Manage Bank accounts screen in Expense dashboard. As a result, the new bank is not defaulting on Expense Payment Request and has to be