Yoodli supports users being in multiple organizations. However, your experience in Yoodli is focused on one organization at a time and you can only access the content from one scenario at a time. As a organization member, you can change which organization you're working within via the "Switch organization" drop down.
To do this:
Go to "General settings" in the navigation menu
Scroll down to "Organization Settings" in that view
Switch to the organization you'd like to work within
(Temporarily required) Refresh the page to ensure you're getting a fully updated experience