It is about 30 years since I dealt with this at a Naval Torpedo Maintenance Facility. We had to deal with an ordnance ground when working around the warhead, and an electrical ground when working around the "brains" of the torpedo. During inspections, we would take hits for the sailors did not put on the right strap, use the right ground, test the strap, or even use it in the first place. We determined the procedures in use gave the sailors no guidance or help, so we did insist on creating procedures for how to don and test the strap, which one to use when, which ground to use when. Doing this ended up resolving issues to the computer chips and of course, gave us an extra layer of protection against things going "boom". And shut up the inspectors.
I am afraid I don't remember or have the actual SOP's but they did address the choice of ground and resistance of the strap, and once you had it on, how to test it was making good contact with your skin.