There are two ways to make the department show, depending on your setup of FocalPoint.
If you are using the full Department records, then make the department show here:
Log into Focalpoint Admin
Click System Control
Click Security profile
Select the users profile and click members
Select the user who cannot see the department and click Setup next to the department code field
Select the correct codes on the right and click add
However, if you are using them from a Manual list in the Purchase Request directory, then make the department show here:
Log into Focalpoint Admin
Click System Options, Purchasing, then Purchase Request Setup
Select the Type you want to amend and click Edit
Go to the Header Tab
Scroll down to Department, then to the right where the column should be Lookup Type should say Manual
Click the button with 3 dots next to it.
From here, tab down until you get to a clear line and type it in.
Click OK to exit that screen and then OK again to exit the members screen. You should now see the department codes in the lookup when raising a new Purchase request.