You can add custom fields to various forms which can capture additional information about your records in MYBOS.
To create a custom field, go to Settings tab
Click Custom Fields
The screen will show multiple lists of custom fields, one per each form.
Click New Custom Field button under relevant form (e.g. Sales Invoices)
Enter name of column under Label field
Click Create button.
When you go to create new sales invoice, you will that your custom field will be created within sales invoice form.