The ability is activated continuously for as long as the associated Input Tag is triggered. Weapon Fire abilities like GA_Weapon_Fire_Shotgun are set to While Input Active. They play a firing Animation Montage, then wait until the refire time has elapsed, and then will end the ability. This is because the Retrigger Instanced Ability is set to false, redundant activation messages are ignored until the ability is finished. We recommend caution using this activation if the Retrigger Instanced Ability is set, otherwise you could spam activation and get undesired effects.