Does run /sys failover standby valid to failover LTM with multiple traffic groups

Hi,

I have active standby LTM pair with 5 traffic groups.All traffic groups are active on active LTM itself.I have a requirement to failover to standby for some maintenance.

1. Should I go to traffic group and check all traffic groups and force to standby (or)
2. run sys failover standby will simply work .

Please suggest. I am guessing option 1 is right. but option 2 can also work?? please suggest as I dont have clarity if run standby command is for traffic group-1 or entire common partition

Regards

Bjorg