Editing the Portfolio items under Project heading

We were needing to keep the masonry layout of the images Project section of the template website but needed to do the following:

  1. Remove the links to pages when clicking and when hovering curser above (to appear on the front-page as an image not a link to another page)
  2. categorise the images under relevant headings (ie show all, design, etc). I have added the headings but cannot have multiple images appear under that heading.

Please advise.

Many thanks