So wait am I reading this right?
Inspiring Boost restores stamina equal to twice your envoy level + CHA mod. Then at level 6 you can spend a Resolve to add your envoy level to the amount you healed.
So by spending a Resolve you basically triple your envoy level for healing?
Yes.
Twice your level, plus CHA mod normally. Thrice your level plus CHA mod when you spend a resolve.