You can add a Widget Page. Or, in other pages, you can use the Change Layout controls to add a box that can hold an HTML Widget.
Then, do these steps:
On a page with a widget icon (
), click
(Choose Widget).
Find and click the widget file you want (*.wdgt or *.html file).
Click Open.
The widget appears.
How to use your widget is beyond the scope of these Bloom Helps.
https://docs.bloomlibrary.org/html5-widgets/ provides more information about widgets.