User selecting the category for an article - submit article

Hello all

I know I have done this before and it's easy once it's found, but I can't seem to be able to navigate to the section that allows me to select which article categories users can select from the drop down menu during the "submit article".

I've attached an image below.
Any help would be appreciated. THANKS!!!!!

CB has no control over the Joomla article submit page. As far as I'm aware the dropdown is based purely off access. So you'd need to adjust the access levels of your categories. I recommend posting to Joomla.org forums though as maybe they've something else to suggest.