First, ensure you have all the items for your desired venue(s) tagged in your Inventory (Visual Guide)
Next, add in a Gallery page with a snippet similar to the example below (Developer Documentation):
<gspro-item-gallery scope-tags="-VENUENAME">
</gspro-item-gallery>
You'll replace VENUENAME with your desired tags
This'll hide any item with that tag from your general 'Gallery'
Then, create a dedicated page to showcase only items with those tags to your venue using a snippet similar to the example below (Developer Documentation):
<gspro-item-list tags="VENUENAME"></gspro-item-list>