Although the Pathfinder games are set in the universe that GW created. The GW stores do not host Pathfinder gwmes. Although it might be a good place to go in a spur up interest for a new group. Many of the independent retailers around town will habe rooms amd all the materials to buy to play though a Pathfinder game.
Warhammer is a store dedicated to the Warhammer 40,000 and Warhammer: Age of Sigmar games created by Games Workshop. I believe what you are looking for is like Total Escape Games in Broomfield. They do a larger variety of games including D and D sessions, magic the gathring, board games and the like. I hope that helps.
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