See the article in the Knowledge base related to adding a channel to Favorites. The procedure is the same, except you will choose the Lock to active Parental Control for that channel. You will be asked for a 4 digit PIN to activate this feature. The default PIN is 0000. You can change the PIN from the app Setting Menu. You can also lock a channel group (i.e., Crime) from the Main Navigation menu.
Support
Smart Home Hosting