on an Essentials 2012R2 server, if it matters, there's a share, lets call it A (\\server\a).
In there are a bunch of folders, lets call them 1, 2, 3, 4, 5, 6
Most everyone should be able to access all the folders.
there's a group that should only have permission to access folders 3 and 5
How would you do that ?
Conceivably, over time, they may create folder 7, 8 and 9. That limited group still should only have access to folders 3 and 5.