02-22-2018 09:24 PM
Check out Manage Data> Cataegories.
You can create an hierarchical tree of cataegories (groups). In each category you can add features or queries from your source warehouses. Can rename them, rename attributes, reorder attributes etc.
When you add legend entry, you then get choice of choosing from the category or from warehouse. If you choose a category it will be created as a group in the legend.
GeoMedia Help > Overview of GeoMedia > Features and Categories > Working with Categories
http://community.hexagongeospatial.com/t5/GeoMedia/Data-Organization-in-GeoMedia/ta-p/7376 ( havn't watched this one, but I believe it covers categories)
You can add categories to a library and/or an GeoWorkspace template for reuse.