Find your group ID on Teamviewer Web interface by clicking the group and look at the address bar. There will be a g/0000000.
msiexec.exe /i "Evangel_TeamViewer_Host.msi" ALLUSERS=1 /qn APITOKEN=00000000-88Yv0ybpRIZwwwNJZFXy CUSTOMCONFIGID=4sss5ss ASSIGNMENTOPTIONS="--group-id g4444444 --alias %COMPUTERNAME% --grant-easy-access"