I keep thinking in my mind, it has something to do with Quotion Tracts--as in a certain Tract of land and the quotioned (amount) of sheep allowed to graze on it.
the govt. has very detailed contracts of grazing rights with regards to how many animals can be allowed on certain acreage tracts and how much human contact with the land is allowed.
That is part of the reason that he was so cautioning of them about not being caught camping (or making a fire) in the grazing tracts.
It is not just the pup tent---they don't want any camp making at all, because if one guy pitches a pup tent---the next will be lighting fires, and then comes the litter, and evidence left of humans in the wilderness--and the govt gets touchy about their regulations.
As to the camp tender, he will be paid the same as the herder, and switching is allowed, as long as the job gets done the way the boss wants it done. He doesn't care who cooks/cleans and packs the supplies as long as someone is always with sheep. Both jobs are essential to getting the sheep up and back safely.
The grazing of sheep is dependant on the abundance of grass, and the quality of it---thick and lush, it will take some time to graze it down----thin or dry, and they have to move pretty quick.
the problem is with sheep---they graze with their teeth---and will cut and chew the grass down close to the roots--and if left in one place to long, they can completely destroy the natural balance of the habitat.
IT is the herders job to access the grass and move on a regular basis within the contract acres--so everything is left high enough for good regrowth.
The reasons for some of the old grazing wars were sheep left too long in one place.
Cattle don't have any top front teeth, and they graze by wrapping their tongues around the graze stems and chopping it off against their bottom teeth---and they leave a lot longer stem above the roots of the plants, so they don't destroy the range quite so fast or completely, unless they are really neglected.