Follow the steps below to add Users to Postal.
Navigate to your Profile by clicking on your name in the top right
Find Settings on the left then select Users & Teams
Select Invitations
Invite a new user by filling out their email, assigning them a team and choosing which role(s) they will receive
Learn more about roles and permission levels here.
Once the Admin invites the User, the User can log-in and go in-between the account(s) that are granted access
Learn more about adding teams to Postal here.