API V3 - Granting multiple category privileges

[btc]

In the v3 write API, it seems that when granting privileges to groups, within each call we can only apply 1 privilege at a time.

It used to be possible to apply multiple privileges in one API call.

Please tell me I'm missing something! As it stands, to apply a standard set of privileges to 2 group members, I have to make 22 separate API calls where I used to make 2!