Your Organization ID is the same as your Church Web Identifier, and this is what makes your MSP database unique. The Organization ID appears in the Web Terminal URL your volunteers use, and is necessary for volunteers to start using the MSP App!
Click on the Licensing pane on the left side of the MSP window, and here you will find your Church Web Identifier, which again is the same as the Organization ID.
To make it easy to share this and information about the app with volunteers, there is a preconfigured email template conveniently in MSP for you. To send this template to your volunteers and let them know how to download the app and what that Organization ID is:
1) Go to the Emailer pane in MSP
2) Click the "Settings" button at the top of the screen
3) Drop-down to "Preconfigured templates" and select the "Mobile app available" template
We have added a new token in MSP so you can send this Organization ID out in your own personal emails, or even include it right on the Web Terminal for people to see when they login!
Click on the Token menu in the Emailer or on a Web Terminal tab, drop-down to the "Web Terminal" section, and select the ChurchWebIdentifier token.