Help with N325 (Warrant of Possession) needed

I took court action to remove two tenants.

I was given a possession order which expired yesterday.

So I am filling in form N325.

I am not asking for rent arrears, simply for possession of the property.

So do I ignore section 4?

Also, I have requested costs so how is that enforced?

One other thing, I am assuming they are still in the property as curtains are up and I can see things on the window ledge. But I do not know for certain as they will not answer the door.

What do I do in this case? Do I assume they are still there as I do not know otherwise?