It is really easy to share your subscriptions within your team or organization. Please follow the below steps which shows how to configure and use.
STEPS
1. Go to the api-manager.xml file and Uncomment the <GroupingExtractor> element.
path - wso2am-1.10.0/repository/conf/api-manager.xml
2. Start the server.
3. If you dont have any API's created. Create and publish an API from the APIM publisher
4. Login to the API Store and go to the signup page. Fill the user details and click more details add an organization name
5. login using that and user and create application and subscribe
6. sign-out from that user and create a new user with the same organization name. login from that user you can get the first users applications and subscriptions.
If you have any issues feel free to drop a comment.
Have Fun !!!