I wrote codes for ATM machine by Matlab, but I do not know how to add pay bills function

main log in screen New User Login Exit r first and last name, email, password the closes return to main number, and phone number screen Navigate menu Logout Deposit Pay bills Withdravw Last Login Print Return to mainDeposit to Checking Enter company name and account Deposit to Withdraw from Saving Withdraw fromLast login Displays Print function displays screen login Checking Available Balance