Enable AAA accounting on a Log Collector by assigning a TACACS+ Accounting Server
Profile in Panorama.
In PAN-OS 12.2.2, Panorama adds a new Accounting Server
Profile field to the Log Collector Authentication tab. When you
assign a TACACS+ server profile to this field and push the configuration, the Log
Collector forwards accounting Start and Stop records to the specified TACACS+ server
for every administrator session. You can use the same TACACS+ server profile already
used for authentication, or assign a dedicated profile for accounting.