Your Circle is the private group around one older adult. Inviting someone is how it grows.
The steps
Go to Family & Friends → My Circle.
Open the Our People tab.
Tap Invite someone to strengthen the Circle.
Enter their email and choose how they join.
Send it, or copy a private link and send it yourself.
Once they accept, they appear in Our People and can share in the journal and messages.
Who you can invite
Anyone you trust. A spouse, adult children, siblings, in-laws, a neighbour. There is no right way to use it: some people invite one person, some invite everybody.
A professional caregiver is different and has its own path. See How do I invite a professional caregiver?
If there is no room
Essential covers the older adult and one other person. If your Circle is already full, the person you invite is not turned away. They accept, and then the person paying is asked to approve the seat before anything is billed.
Nobody is charged until that approval happens. See Someone accepted and now I am being asked to approve them.