how to check Dialup vpn user log in fortigate || Dailup L2tp over ipsec ||

Dear community,

I have fortigate firewall, today I thought can I check which user connecting Dialup vpn frequently and until when user was connected. It is possible to check ??

Remote authentication server for vpn user -  I am using - Raidus for authentication.

The information which I am not able to see as follows -

Group name - ??

XAUTH USER - ??

XAUTH GROUP - ??

Can anyone tell me where Can I see these information with respect to vpn user activity.

Thank you.