Use the Toolbox to access the standard controls you can insert into a form, for example a barcode or a check box.
To use the items on the toolbox, you can either 1) click to select the control then click again in the form to release the control, or 2) drag the control into the form then release your mouse to drop the control into the form.
For example, to add a text label for a field on the form layout, click Label and drag it to the desired location on the form. The text for the label can be replaced, and the format of the text (font type, size, etc.) changed, along with the position of the label on the form.