Apple PowerBook (Duo 270C) - Manual (Page 214)

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To see all the groups that a user belongs to, open the
user’s member icon or user icon. Selecting a user or group to share a folder or disk
You can give one registered user or group exclusive access to a
shared folder or disk on your computer.
1. Select a folder or disk to share.
2. Choose Sharing from the File menu.
3. Click the box labeled “Share this item and its contents”
so an X appears.
4. Choose a user or group from the User/Group
pop-up menu.
198 Chapter 12: Using Your Computer on a Network
The groups the user
belongs to are listed here.