How to Add Columns to a Table
To add columns to a table:
The New Column wizard appears.
Once the column has been created, you can refine both the table and its columns if required, by double-clicking on the table name in the Project catalog. You can use the What's This? help in the Tables window for help on each field.
You can also define a new column yourself. Double-click on the table in the Project Catalog to open the relevant Tables window. Then place the cursor in the Column Name field, and click the New button on the toolbar.