PFCG is the transaction you use to create and maintain security roles in SAP. But somehow “Authorizations” tab can be disappear in the transaction, in this case you need to check or add below profile parameter to visible this feature again.

In PFCG tcode, you cannot see the tab “Authorizations” like below ;

Then you need to check parameter “auth/no_check_in_some_cases”, if this parameter is defined as “N” like shon in the below profile picture ;

Then you need to change it to “Y” and restart the system.

Now, you can see the “Authorizations” tab in your PFCG transaction easily.