Step 1: Use the "Invite Colleagues" option from your initials located on the left corner of the screen to invite the new user through their e-mail address access to the account:
Step 2: Enter the email information (Note: We do not support personal email addresses. You can only invite company email addresses.):
Step 3: Click "Send Invites" once you have filled in the information fields with the new email:
Step 4: Once the new user has received this "Invite Colleagues" email, they can then sign up with their email address by clicking on the email's provided link:
Step 5: After the new user signs up under the new e-mail address, access your initials on the left hand side of the screen again and click on Settings and Billing > Company Settings > User Management
Step 6: Change the activation from the current e-mail address to the updated e-mail address: