It's super-easy to add new team members to your Rectxt team plan. Simply navigate to the 'Team' tab and click 'Send invite' which will open up a dialogue box for you to type the new member's email address.
The new team member will recieve an email notifying them that they've been invited to join your Rectxt team with a link to create their account and pick their phone number.
IMPORTANT NOTE: sometime these emails go to junk/spam folders
Once the new team member finishes creating their account it will be displayed in your team list.