As a member of a Fleet you get full access to the Pilot Partner Electronic Pilot Logbook system. You can use this to record all of your flight time with your Flying Club and for aircraft not apart of your club. If you leave the club, you can renew your subscription with Pilot Partner and continue to use it.
If you choose to not track all of your flying in Pilot Partner, that is alright as well. You will be required to enter the required fields for each flight you do with your Flying Club to track Invoicing and Maintenance for the club.