fallout-4
When I highlight a plant or guard post and it shows a red vault boy, does that mean it doesn't have an assigned person to it? I assigned someone to the post and it was green for a bit, then went back to red.
It seems to change colors from red to green and back no matter what I assign people to (Crops, guard posts, etc). What does that mean?
This is actually not as difficult as originally thought, although it can be time consuming and isn't particularly intuitive - in order to assign a worker to a resource you must be in workshop mode and then approach the person you want to be the worker, speak to them and "command" them:
...then go to the location you want them to work and you'll have the option to assign them to that post.
They'll then walk over from their original position and start working.
Settlers are either assigned or not. There are no statistics regarding settlers and opening up VATS on them doesn't reveal any additional information either. Even if they're not they'll still fight if an enemy approaches them.
The exception being that the named settlers from Sanctuary cannot be used to set up Supply Routes.
Best Answer
As discussed here - in order to assign a worker to a resource you must be in workshop mode and then approach the person you want to be the worker, speak to them and "command" them:
...then go to the location you want them to work and you'll have the option to assign them to that post.
They'll then walk over from their original position and start working.
The person icon will go red again if you reassign a person who was already assigned to another task, or that person is currently not performing that task (ie: sleeping). Unfortunately, there is no method of seeing an overview of all tasks your settlers are currently assigned to, however you can see what each individual is assigned to if you have visibility of that individual and their assigned task - this picture will show you what I mean:
This settler is only assigned to half of these carrots, another settler is doing the others, so when I target this settler is highlights half of the carrots.