If you have the Power add on for WordPress or the Power / Professional / Enterprise level for MySLP you will see a header tab in your Store Locator Plus menu labeled Categories. This is where you can establish and manage settings and determine the categories you want to add within the form section of the user interface.
With the Power add-on or the SLP SaaS professional level plan or higher, there are options to tag a location or assign a category to a location or do both.
“Tagging” locations can be done one of two ways. The informal method is to use free-form tags that are setup via the Word Press Store Locator Plus Plug-in with the Power add on. Or the (My)SLP SaaS Professional level plan or higher The structured method is to use the Store Category Manager under the Categories tab (not available with the basic plug-in or Advance level plan)