I'm fairly new to Solidworks, and this is the first time I've used design tables on my own computer rather than a department computer, but I cannot seem to manually add dimensions to a design table when making parts. I have been through all the relevant tutorials word-for-word and I am unable to add the dimensions to the table when working on those either, so I'm wondering whether I have missed something in the program settings rather than it being something I am doing?

I am using Solidworks Student Edition 2012.