The easiest way to do this is to ask your admin to switch this on in Settings > Manage your team.
If you don't wish to add all team members, you can also do this with the bulk actions. 🙌
Just ask any admin on your team to do the following:
Click on one account avatar
Click "select all" at the top left
Click on the three dots at the top right and hit "add user to account", select your team members, hit save and confirm
Now your teammate has been added to the team of all accounts. ✨
Want all team members to be added to all new accounts in the future?
Want to add them to just one account? Here's how.