Please review Chapters 3[1] and 4[2] of the OSIO User Guide. The contents are:

3. Working with Collaboration Spaces
3.1. About Collaboration Spaces
3.2. Creating a New Collaboration Space
3.3. Delete an Existing Space
3.4. Configuring a Codebase
3.4.1. Adding a Codebase
3.4.2. Importing a Codebase
4. Working with Collaborators
4.1. About Collaborators
4.2. Adding Collaborators
4.3. View/Change Collaborators
4.4. Assigning a Collaborator

[1] - https://docs.prod-preview.openshift.io/openshift-io_user_guide.html#working_with_collaboration_spaces
[2] - https://docs.prod-preview.openshift.io/openshift-io_user_guide.html#working_with_collaborators