1
Open Spaces
Click Spaces in the left sidebar.
2
Name it
Click New space. Give it a Space name. Create stays off until the name has text. Description is optional.
3
Create it and open it
Click Create. Click the new Space on the list.
4
Invite someone
Click Invite contact, then Invite next to a person. They join the Space. You do not send a code.
An Admin can invite a contact. If the list is empty, add someone in Contacts, then come back.