The actual solution is that you have to make two edits to the PS field to get it to save the change. It's a glitch in the 1.5.2 version of Precious Stones that doesn't get fixed till 1.6.2. So, when you want to add someone, do
/ps allow ChiefCrazyCowThen perform another command on the same stone, like:
/ps allow notchIt will allow Notch into your field but he probably won't log in and find his way to your field
![Cheesy :D](https://famcraft.com/Smileys/akyhne/cheesy.gif)
Some people add Plenary to their fields for good luck, lol.