Setting table column permissions:
Open the Table folder
Select File | Properties from the column icon .
Click the Permissions tab.
From the Permissions For list, select Users, Groups, or Roles.
You can grant these permission types for tables:
Sel – Permission to select
Upd – Permission to update.
Ref – Permission to create referential constraints.
Decrypt – Permission to decrypt.
To grant or revoke permissions, click in one of the columns for the user, group, or role you have chosen. The permissions cycle through the options listed on the Legend.
Click OK or Apply to finish.