Through the [gamipress_credly_login] shortcode (block and widget too) you can place a Credly login form anywhere where your users can sync their Credly account with your website account to sync the achievements they unlock on your site.
Note: Through the add-on settings, you can enable an option to enable the automatic sync of your users accounts.
There is how this form looks:
When an user syncs his Credly account, every time they earn an achievement synced with Credly the earning will appear on his Credly account too. There is an example of a badge earned from the website:
Note: The first time you award an achievement on Credly the user needs to accept this award but if user clicks on the “Make trusted issuer” link all upcoming awards will get automatically accepted.