VPN Logging (OS 5.4.7)

I could use some help setting up a log to see who has logged into our Fortigate 60D IPSEC VPN with Forticlient from their home office please. I have a log showing all failed attempts, located under Log & Report>VPN Events,   but it doesn't show successful logins. Under Policy & Objects>IPV4>IPSEC VPN policy section I have set the policy to Log Allowed traffic and have also selected all sessions. (see attached snippet). And of course in the Monitoring section at the bottom of the Left side Menu tree, it only shows sessions that are active. Thank you.