Sliding off top without input

How to recreate force sliding on floor like in picture, but without pushing any buttons?
Like character begins overlap with slide trigger, and then what to do next?

It’s a little difficult to figure out what you’re trying to ask, but I assume it’s to do with physics.

If you want a static mesh to slide down the ramp and overlap with your box trigger, you can click “simulate physics”. Just remember, all physics objects need to be configured with collisions as well. To add resistance as it’s sliding down, you can change the linear and angular damping. Linear damping controls movement-based resistance, whereas angular damping controls rotational-based resistance.

Simulating physics is an automatic process so you won’t have to press any buttons regardless.