Okay, first thing confirm that yours is the mbot grid II + 2016 and that the build plate has the three single cutouts 1 at the front and 2 at the back for the print nozzles. This is my printer setup and the startup script works fine with this.
During the configuration wizard choose the mbot grid II dual.
When installed goto file, load factory file and choose the file I have attached you will have to change the extension to .factory as unable to upload otherwise. This file will have all the settings for you to do a test print with your right head. You can change the temperature to suit. I did a test print on mine and it works fine.
Goto edit process settings, scripts tab and confirm that the startup script is the same as I mentioned earlier, if not then delete what is there and paste in mine it should look like snap below
Prepare the print and send to sd card.
When printing just to make sure head does not crash into bed keep finger on power button and watch printer as head moves to all calibration points.
20mm_box_with_hole.gcode (4.3 KB)