Update README.md

Author: bokkoman

README.md

@@ -49,4 +49,6 @@ Create SCCM/MDT task sequence and run script during Specialize pass in the autou
 
 Boot installer. Windows should install and run the script to upload the device to AutoPilot.
 
+If device is already registered into Intune with a grouptag, the script will prompt you and you can choose a different one. (you can edit this section in the powershell script.)
+
 You will be presented with the AutoPilot enrollment screen when finished.