Manual index
Field wizard
The field wizard helps you to easely defined your fields for your module.
You can find the field wizard in the Module screen, under menu Fields, Edit

The field wizard starts with the field you selected in the grid, and will update also this selected field when finished.
If a field is an identifier, the next tab's will be disabled, as the indentifier field needs no special formatting. However if you want to change it to another field, just unselect the checkbox 'This field is the identity field'