Can Melee Attack While Moving – When true the AI can play melee attack animations while moving, If false the AI will stop moving while playing an attack animation.

Melee Allow Rotation – When true the AI can rotate to face its attack target while play an attack animation, if false the AI will stay facing the same direction while playing attack animation until the animation ends.

You can find both these variable in the BP_SmartAIComponent class defaults and the BP_AIMasterHoldable class defaults as well as any child blueprints of the BP_AIMasterHoldable.