Need to add a calculated field to an Access form? It's easy, and you can do it on the fly. Just add a new text box control with the appropriate formula as its control source.

Add additional tabs, if desired. Move existing form fields to a new tab. Click on a field to select it or hold down the "Ctrl" key to select multiple fields.

In Microsoft Access, fields can be added and removed from the list of available fields. Learn how to add or delete a Field in Design View in Access.