You need to click add widget beside the add widget button. You will find some block that we are providing, Default block from Page Builder and WordPress. Some custom page builder we have created are grouped in SMAZE BUILDER categories.
You can drag and drop some builder block in a row to another row in the same page.
after you click that button will appear a box "widget block". You can choose your content there.
then we will describe to you about the block widget: