Find the font that you'd like to use using the search
At the top of the fonts list, click Add to web project
In the dialog that appears, choose an existing project or create a new one
Adobe Fonts' Web Project editor
Click Edit Web Project on the confirmation
Take note of the Project ID, the font-family, and the weights that you'd like to use
Relevant information within the Edit Web Project view
In Formsort, go to Style > Typography > Add font family... > Adobe Fonts and add these values. The font is then available for use - you can assign it to be the default font, or use it to style particular typographic elements (H1, H2, etc).