DarkRP combine doors help!

I’m using map Rp_City17 - Open Beta [Build 181].
Gamemode: darkrp.
Version: 2.5.1

I want to know how to open combine doors.
btw only CP’s/MAYOR
thanks -Heldex

It woud be really nice if you help me im stuck at this point on that map.

EDIT: Everything on text is now fixed.

Yes. Press the buy door key and set it to only be usable by the Civil Protection/Mayor team.

[editline]20th August 2014[/editline]

No the combine slider doors.
not default wooden doors.