Slic3r support

I couldn't find how to print with support on slic3r last night. I have the the latest version. Does anyone know if it is possible? Also my print head stays on after the job is completed, but the bed turns off. What is the G code for turning the print head off and can it be inserted at the very end? Also I know its been covered, but I'd like to try kisslicer, but kinda remenber reading there are some settings that need to be changed to print on SD2. Can I get a Kisslicer for dummies overview real quick on initial settings?