We need to filter our locations by brand. Does your plugin or an extension to your plugin have this feature?
Assigning Brands To Locations
Power add-on for WPSLP (DIY) or the Professional level plan (or higher) for MySLP is the right choice for doing that. Either allows for simple categories or parent/child relationships between categories. Locations can be assigned to one or more categories. Your users can then search for locations based on those categories.
For more complex hierarchical functionality , button bars , horizontal check-boxes for categories and more customized approaches you might want to check out our WPSLP Premier subscription or the MySLP Enterprise level subscription
Add a category for each brand you offer and your users will be able to filter locations showing only those that offer specific brands.