4. Sign into your Gmail account
Click to turn on 2 step verification and enter a phone number under the "Voice or Text Message" option. This number will be used to receive a numeric code from Gmail, which is needed to authorize access to Outreach or other 3rd party apps that may be used in the future
Enter the verification code sent from Google and click 'Done'
Check the 'Trust this computer' if the user is on a trusted computer and click 'Next'
Click 'Confirm' to turn on 2-Step Verification.