There are three types of pages on Untappd:
Brewery Pages: All checkins to all beers by the brewery irrespective of where the user has tagged the location (Example: https://untappd.com/greatlakesbreweryca).
You can manage this page if you work for the brewery.
Beer Pages: All checkins to a selected beer, irrespective of where the user has tagged their location (Example:https://untappd.com/b/great-lakes-brewery-pompous-ass-epa/7028).
You can't manage a beer page, but you can edit/manage the beer if you have claimed the brewery it belongs to.
Venue Pages: All checkins to that venue, irrespective of what beer the user had. (Example:https://untappd.com/venue/518).
You can manage your venue page with Untappd for Business.
Since these are different pages, we can't merge them together. We hope this makes sense!