Edit Access
You can set access to one or more fields in an object.
- Select one or more fields
- Right-click and select
Edit Access - App shows the Field Access dialog.

Go through Field Access page to understand how to use the dialog. But here are some important notes regarding Editing Access for existing fields.
Keep in Mind
- When you goto access dialog, it shows current access of field
- If you have selected multiple fields, it shows union of all fields