If you mean environment maps for reflection you have to provide these as cube maps. Usually these are produced in horizontal or vertical cross format.

You can use these in any *_Refl_* shader in Aximmetry, selecting them as the Environment Map.

In the property's conversion attributes you have to designate that this is a Horizontal Cross cube map.

That's it.  In Reflection Color and Fresnel Min Value you can adjust the properties of the reflection.