It is, and isn’t possible, I believe.
If there is a gap between the two plots, it is possible as it counts as 2 different plots. But if they are touching, they both combine into 1 big plot, and thus the permissions effect all of it, not just select part.
My solution to it, is if the Devs added in a third Plot item. Where they have a Plot Add, and Plot Remove, item. They can add a Plot Color. That visually changes the color of the plot, and only the owner can see it. What more, have it where the Permissions for the plot can be set for the different colors.
In other words, making different plots within the beaconed plots, into sub sections that you can give people permissions for.
It also would be nice if Permissions were much more indepth too. Such as giving people permission to use machines, but not access the machine’s inventory. This being done by having the items in your inventory, and when it’s done, it waits for the player to come back then gives the item into their inventory if there is room.
(Of course there could be griefing in this too, someone sets the machine to build something for half an hour, leaves, and the owner returns and breaks the machine to get the items they were using to craft, or the finish product.)
My way around it, for the devs, would be to 3 fold. First, the player who put items into the machine, have 24 hours to get the end result before the item goes to the machine’s owner.
Second, when the machine is being used by another player, aka it has another player’s item inside of it being crafted or waiting for pickup, the owner can not break it/remove it. This is to prevent griefing.
Thirdly, the permissions thing can be switched to off even while a machine is in use so no new player can use it. But those already using it, or have used it and collecting their item, still can until their use of the item is over. This is to help with the second bit, so the owner only has to wait a max 24 hours before they can remove and relocate the machine.
Indepth permissions like that, and can color code your plot to create Zone with different permissions involved, would be very good thing to see, in my opinion. As it would allow towns to make public areas for people wandering around. Such as a building that has the highest tier workbenches for use. Maybe even make people have to pay coal or peat to get in to use it, as spark isn’t free lol.
This would be especially for those of us that aren’t as grindy as others, so don’t have any money or access to the materials to craft end game stuff. But might need it. (Such as me not having any power for my machines, so can’t create Tier 3 Decoration blocks.)