Enterable interior

Hello,

Does someone know how to make an enterable interior in ZM3?

I want to make an enterable bus interior, the city bus.

The character should enter the bus at the front and rear doors, if they are open.

I am trying to figure out how to do it but I didn‘t get it.

I see in OpenIV in the model-viewer, at the collision tap, there are red spots... and I guess there you can enter the vehicle (I looked at the cargobob).

If someone knows it, please comment.

I appreciate any comment 🙂

Thank you