Creating a callback request form
Click the button Add New Item ➝ enter Form Title ➝ click the button Next.
Adding fields to callback request form
Using drag and drop, add fields from the sidebar to the form.
Editing callback request form design
From the top bar, click the button Design ➝ Advanced Settings. Using available options, change the design of your callback request form.
Enabling form popup
From the top bar, click the Design button ➝ in the Layout field, select Lightbox.
Configuring popup triggers
Click the Lightbox Settings icon ➝ the General tab ➝ Trigger ➝ set Time Delay ➝ open the Display tab ➝ set Position.