In your Widget Package's package.json you may set Sharing settings, which will make your package available in a Workspace or for a Team.
The package will always be available in the project it belongs to. You can click Open Project to go to the project where the package was created.
Share this widget with all the users and teams that belong to your current account
Share this Widget Package with a Team, it will be available to all the Team's members in all of the Workspaces
Make this Widget Package available to anyone working in a specific Workspace