Help on making subdirectories shared in home netwo

The tick in General Tab of Properties of all subdirectories, in each of my partitions, are grayed & when I UNtick it comes back again, even if in the "Sharing" Tab I have both ticked in "Network sharing & security"
And this happen on both my PCs.
Can you advise how to make all subdirectories shared by both PCs?
Thanx luke
And this happen on both my PCs.
Can you advise how to make all subdirectories shared by both PCs?
Thanx luke