to head up the department

[Saneta]

http://www.english-test.net/toeic/listening/whos_not_available_to_come_in_on_saturday.html

Please explain: Let's head up the department.

Muchos gracias :)

[Beeesneees]

You have to bear in mind that it's one of the options which is incorrect because it doesn't make sense.

As far as I am aware, if someone 'heads up' something, they take charge of it.

The other possible meaning is more literal... let's go further into the room where the department is based.
_________________
Cheers m' dears!