In this scenario, you are working with lots of fixtures (for example 1000 RGB fixtures) and after taking an hour positioning the intensity attributes in one grid, you want to create another grids with the same layout for the hue and saturation attributes. How can you do that in a few clicks?
1) Duplicate your grid containing the layout you want to reuse
2) Go in the newly created grid and select the new attributes you want to use in the attribute list at the right. For example, if you want all hue attributes, type hue in the search box and select them all.
3) Go in the Edit/Attributes menu and click the Replace By List Selection item.
Result:
All attributes replaced, lightning fast!
This works for any type of attributes, not only hue, saturation and intensity.