To add a team member do the following:
You
Open settings in the Walkies app.
Tap the "Team" option that should be second in the list you see.
Tap "Invite" in the top right corner.
You may now be prompted to update your subscription to allow for a new team member. In some cases this is done automatically and so you will not be prompted.
A new screen will open.
Tap "Send link".
Choose how you'd like to send the link to your team members and send it.
Your team member
Your team member needs to download the Walkies app.
Your team member needs to sign up.
Your team member needs to tap the link.
Your team member will be added to your team.