adjustable lifters

[Dick M]

I am attempting to adjust my adjustable lifters for the first time. I am using the valve adjustment method from the Les Andrews red book. My question is: Do you simply hold the lifter with a wrench and turn the adjusting nut for proper clearance when making the adjustment? Further, is there a locking mechanism for the adjuster? I sure do not want to put it back together and have the adjustment change on me. Any help would be appreciated. Thank you.