"Set simulate physics" from matinee

Hi
I’m really noob on UE4 , I am going to make a short animation movie and have a question.I search alot but found nothing.

How can I control “Set simulate physics” from matinee. For example when time is come to 14 seconds in matine , “Set simulate” should be Active .
I can not control it from timeline If you give to me example , or advice , I will be pleased
Thanks.