Follow the said steps: (Account Settings → Team section)
There are two ways you can add team members to your account. To access those two options, click on the update team button, as shown below.
Only an account admin can add or remove members from the account.
Now, you can either add the email of your team member or you can share the Team link with them.
After they confirm the same through their email, they’ll be added to the team plan.