How to set Record Level Security permissions on a record

For this demonstration we permit all users to view (Display) a particular record, but only members of group Admin to Edit and Delete it.

1. Search for the record to which to apply permissions.
2. On the Security tab, select group Everyone in the Security box.
3. Uncheck the Edit and Delete checkboxes in the Permissions box:

   

   Note: The minimum permission for a user / group is Display: in practice this means that when a user / group is added to the Security box, the Display checkbox is grayed out and uneditable. To remove all permissions for a user / group, including Display, simply remove the user / group from the Security box.

4. Click Add to add a user / group.

   The Select User / Group box displays with a list of all available users and groups.

5. Scroll through the list of users / groups and double-click the user / group to be added (or select the user / group and click OK).

   The user / group (Admin in this example) is added to the Security box:

   

   The minimum permission for a group added to the Security box is Display and by default this permission is checked for group Admin (in fact, group Admin has inherited this permission from group Everyone). The Edit and Delete permissions can be ticked / unticked for group Admin however as these permissions were not inherited from group Everyone.

Tip: Don't forget that users inherit permissions from the groups to which they belong!