#1. I don’t know that there are instructions for that, just don’t turn on the router and make sure your bit won’t drag if the router is off. You could pull out the router and put in a marker instead…
#2 yes. maslow runs on gcode, so you have to generate gcode for it to move.
#3 you are getting there. Makerverse is a gcode sender program. it takes a gcode file and sends line by line to your maslow M2. If you want to make gcode, you need a CAM program that takes a drawing file and converts it to gcode. If you want to make a drawing, you need a drawing program that takes mouse input to make a drawing. There is a wiki entry call the maslow manual that attempts to explain this also, and provides a limited list of links for some of the various options.