If the clutch is slipping, (rear wheel freewheels), tighten the flower nut.
if the clutch is sticking (rear wheel turns only with motor), loosen the flower nut.
Put another way:
If the running motorbike wants to inch forward while the clutch lever is pulled in all the way - adjust the cable if loose and loosen the flower nut if needed.
If the engine rpm surges high under acceleration but bike isn't accelerating, make sure your cable is not too tight and tighten the flower nut if needed.
Move the flower nut only one notch at the time until you get a good feel for it.
When I commuted long distances (50 mile round trip), I dealt with the same clutch issues.