Channels can be assigned to users by setting the following registry setting:
Key: Selected Update Channel
Type: String (REG_SZ)
Value: Any string; it should not include spaces if there are multiple words, for example, "beta_channel" (not "beta channel")
In addition, instead of relying on the default value in the update.ini file, administrators can roll out a channel from the command line to bootstrap the initial installation. Administrators can achieve this by running the installer with the following argument: UPDATECHANNEL=”channel_name".
For example: iManageInstaller.exe UPDATESERVERPATH=server_name.com/myupdateserver UPDATECHANNEL=beta