How to Edit Filter Block Settings

I’m creating a job board so that my friends from college and others in the industry can search for jobs.

The template I’m using has a filter block. At first, I just hid it because I don’t know how to configure it (since I’m not an expert) but then I thought it’d be really convenient for people to be able to use it to narrow their search (plus, I don’t want to just hide it and take the easy way out).

I can’t figure out how to get the buttons and search bars to work. I went on the university, but I still don’t fully understand what to do (and I don’t want to mess anything up). Can anyone help?

Here’s a pic:

Here’s the read-only link:

Thanks a lot!