When you add the calculated field, its name displays in the Calculated Fields list. You can then insert the field as you would insert any other field.
To create a calculated field:
In the Calculated Fields window, in the Name text box, enter the name of the calculated field you want to create.
Note: The Name text box has a 15 character limit. You can use spaces and special characters in addition to letters and numbers.
To save the calculation, click Save.
Note: The Save button is not available unless all required fields (Name, Description, and Calculated Field Expression) are filled out.