Handy principle, if you are green light to manage course stewarship.
"Trim like a Goat"
Trim like a goat? yupp - its a handy saying that can help you or an inexperienced crew of volunteers. Think about it. A goat likes to trim low stuff around ground level. Brushy stuff, stuff that otherwise likes to grow back. And when they chew it back, they stop when they dont get any more than they want and it does grow back. (vs hogging out root balls)
Plus goats can't trim so far up in the air. They can reach about the height of a man's overhand, but not much more. And goats don't trim for scoring advantage routes either.
So Its a handy saying that can provide direction if you don't have one.
Otherwise here are some general codes I'd adhere to. Here in the NW, I've been an advocate of a hierarchy of plant species when it comes to course cleaning. Invasive non native plants, vines, stickers are free game anytime anywhere. These are the plants on your local non native invasive plant hit list - for us that's Himalayan blackberry, scotch broom, butterfly bush among others.
And for us, small alders are negotiable, conifers are more sacred. Within that - small bush immature cedars are thinnable, but firs generally get right of way preservation.
other guidelines could be set up (for yourself, or for a crew) by self designating a trim size limit such as no cutting over X" size, or having a pole staff at x' that is the cut off for high pruning, unless case specific variance is warranted.
Consider doing a simple paper diagram of any work party's objectives to have on hand so anyone that wanders in knows that some thought is attached to what is going on. Can be simple.