The GIS window in Taxa section serves a specific purpose of displaying a distribution map for selected taxon (how to create distribution map).
Distribution layer is loaded dynamically into GIS view as the taxon is selected (if it has been created before).
GIS view in Taxa section does not allow for editing (refer to main GIS section for editing) but you can load different background layers (see here for file formats).
Distribution layers are stored under [Your Database Folder Path]\GIS\distributions in standard shape file format (.shp) using taxon's internal ID number for the file name (you can use Layer|Export to SHP command to save selected distribution under different path and name, but the original should remain as it is used for automatic loading to the Taxa GIS view).
As for the rest, Taxa GIS view functions as normal GIS view with all parameters adjustable and other commands applicable.
