1. Login to Flow at flowinc.app/login
2. Click on your organization name in the left-hand sidebar. Then click "Settings."
3. Click on "Security."
4. Click on "Enable."
5. Enter your "Password" (1), then enter your "Phone Number" (2), then click "Send Text Message." (3)
6. Enter the verification code sent to your phone (1), then click "Verify Phone Number." (2)