The channel info is part of the live / preview cycle, as can be read at Live and Preview configuration cycle, which explains that once a preview configuration is created, the channel configuration for project example looks as follows:
+ hst:hst + hst:channels + example + example-preview
Now, when a webmaster makes changes to the channel settings through the Channel Manager, the channel settings get locked by the webmaster. Other users can still open the channel settings dialog but all options will be greyed out:
The lock is freed after the webmaster publishes or discards their changes.