Can dropdownlist be used to give info on other dropdownlist.

I have two dropdown lists on my first Sheet, (getting infro from my thirs sheet).

I want to know if and how if it is possible to to the following.

If I choose a name in my first dropdown list (Policy name) it must then give me a choice in dropdown list (Server Name).

The Policy name can have 1 ,2, 3, 4, or 5 server names in it, I still want to use the dropdown list as some policy names don’t have server names attached to them