Under tool groups, select Fill & Sign.
Then, click Form Builder from the toolbar and select Customize fields.
Then, simply click on the field you wish to adjust. This action will cause a panel to appear on the right side, displaying various editable properties for your selected field.
After making the appropriate adjustments, click Apply.
NOTE: Access to the Form Builder feature is limited to Workspaces that are subscribed to either the Business or Enterprise plans. For information on upgrading your plan, click here.