hmm i wouldn’t use the matinee for character animation dont get me wrong its fine for object animation such as door sliding open or objects moving but not for character
for your question how to reuse it? after a matinee animation is called you have to reverse it to reuse it again so after you called the animation somewhere on that line put reverse (literally right click and type reverse) in order to reuse it you will also have to do one more thing select the matinee on the screen and in the details box under rewind click rewind if already played then you should be able to call it as many times as you want