ARS Read/Write Group Members

I was trying to give a user read/write group member permissions directly in ADUC based on what permissions another user had.

I gave the user read member and write member permissions as those were the permissions that I saw on a working user, however, this did not work.

I then used ARS to apply the Read/Write Group Member template to the group object and it worked.

So my question is: What are the exact permissions this template applies and what attributes does it update?

Thank you,

JC