Owners and moderators add people to a Space. This is the only way into a private Space.
Before you start
You need to be an Owner or Moderator of the Space.
Who you can add depends on your workspace access. Admins can add anyone in the workspace. Everyone else can add only the people they manage, such as their reports and the members of groups they manage. If you manage nobody, you'll see No users to add.
Add people
Open the Space and select the member count in the Space header (for example 3 members). Settings opens on Members.
Select Add Members.
Find people by name in Search people..., or select the filter icon to narrow the list by Job Role or Groups.
Tick each person you want to add, or use Select All to tick everyone in the list.
Next to each person, choose their role: Member (the default), Moderator or Owner. Moderators don't see Owner.
Select Save Changes.
Note: Each person you add gets a HowNow notification: You've been invited to [Space] for a private Space, or [your name] added you to [Space] for a public one.
You'll see Space updated successfully, and the new members appear in the list with the roles you chose.
Good to know
Read Only users can only be members. Their role is fixed at Member.
Anyone can join a public Space on their own, without being added.