In the left-side menu, select WP Pusher >> Install Plugin. Select the following values:
Repository Host: Bitbucket
Plugin repository: printsciencewp2print/print-science-flex-designer
If the Flex Designer plugin is not yet installed in your site then uncheck the checkbox Link installed plugin. If the Flex Designer plugin is already installed in your site but is not yet configured with WP Pusher, then check the checkbox Link installed plugin.
The image below illustrates the Install Plugin page:
