How to make Animation and Physics work together?

Hi everyone, I'm beginner at Unity.

I downloaded asset with animations to check how animation controller and ragdoll is working. And then, I noticed, that when animation is playing, object stops reacting on physics and ragdoll, and when you switch off animation controller - physics starts working, as well as ragdoll.

Here is the video : https://youtu.be/_jjJal7F3Q4

So, question is: How to make physics working, while animation is playing? Like when I'm moving cubefrom under the persons feet - person, with animation, must fell down to the ground or other Collideble object.

Is the scripting necessary, or there any other solutions ?

Thank you!