Users and Security > Using Security Functions > Define GL Account Security
  
Define GL Account Security
GL account security lets you restrict who can update GL accounts based on user ID or user group. Account security is only effective when Verify GL Accounts is Yes in Domain/Account Control (36.1).
Use GL Account Security Maintenance (36.3.9) to assign users or security groups to account numbers. Use the GL Account Security Report (36.3.23.16) to list all accounts that have controlled access.
See Specifying Groups or Users.

GL Account Security (36.3.9)
When a user attempts to create a transaction affecting an account, the system checks the user ID and the groups associated with the user against the list associated with the account. If a match is not found, a message displays and the user cannot complete the transaction.
Note: Account security is not applied during Transaction Post. Use Menu Security Maintenance (36.3.10) to restrict posting functions.