Chevreuse’s field time typically consists of using a quick Hold Skill. If needed for its Pyro application, hitcount, or to activate 4 Noblesse Oblige, she also uses her Burst. Whether it is used before or after her Skill varies: casting it before lowers her field time and lets Chevreuse absorb her own Energy, while casting it after allows Chevreuse to funnel the particles to the incoming character while remaining on-field during the numerous secondary hits for effects such as Favonius Lance.
If there is spare time in the rotation and no better option to fill it, Chevreuse can cast up to 3 instances of her Hold Skill after Burst.