What is the most logical next event?

How to use a bench grinder
Perform a safety check before turning the grinder on.
Make sure the grinder is tightly secured to the bench. Check that the tool rest is in place on the grinder.

Available options: (a). Make sure the tool rest is complete before beginning the drive-thru. Enable the drive-thru to start, then perform a safety check.. (b). Remove the grinding nut to verify that it is secure. Install the brush attachment to the grinder.. (c). The tool rest is where the metal item will rest as you grind it. The rest should be secured in place so there is a 1/8 inch (3 mm) space between it and the grinding wheel.. (d). Make sure to turn off the grinder or it may shut off once the bench grinder is turned on. Tighten the time on the bench to " depress " the grinder..
(c).