The idea is to make it possible to link one Dimension Value with a Dimension Value from a different dimension. So If the user choose a specific dimension value it will automatically give the other linked dimensions. I would work a bit like putting standard dimensions on a G/L account, but instead putting standard dimensions on a dimension value.

To enhance it further the feature could update Dimension Combination based on the setup, so it could block all other combinations than what is setup on the dimension values.