Limiting the Filter Options

Hi Guys,

I was wondering if anyone might be able to help me.

I’m currently setting up a job board on my website.

I’m trying to work out how to ensure on the parent job listings are available in the filter menu and not the sub categories. I am having to create a large number of job types which I don’t want to display in the filter options – I just want the main parent Caterogies to be shown.

Does anyone have any idea if/how I could achieve this?

Many thanks for any help.

Tim