Only the suthor of ABAP programs can see and edit his/her code

Hi:

We've created developer accounts with the following authorization profiles: A_ABAP_ALL, S_A.DEVLOPER, AND S_A.USER.

The account holder can access the system, create ABAP programs, and successfully run them. However, there is a problem: a user can see and edit the programs of others.

Can we set up the account in such a way that only the author of the program can see and edit it? If YES, what should we do?

Thanks a lot for the help,

Thuan Nguyen