In order to go live from Mevo to a Facebook Group, you must be an Admin and need to install the Mevo Facebook App to your Group. Once you have configured these settings, you can go live to your Facebook Group from Mevo.
First, make sure you are an Admin of your Group. Only Admins can adjust Group settings and go live to Groups. Also be sure you have updated Mevo to version 1.9 or later.
On your Group's Discussion page, open the More menu and select Edit Group Settings.
Scroll down to the Apps section and select Add Apps.
Find the Vimeo app in the list and select it. Once you've added the app to your Group, be sure to scroll to the bottom of the settings screen and click Save.
Please note that streams to Groups will always be public to members of your Group, regardless of the audience setting selected in the app.