The code for a Plex channel is contained within a directory named with a ".bundle" suffix. As such they are often referred to as bundles. To install the Unsupported Appstore or other channel bundles manually, you will first need a link to the channel bundle. Sometimes the bundle will be posted on the Plex forum or available via link to download from GitHub. In order to install the channel:
Download the linked file. If the link leads to a GitHub page rather than a direct download, select the "Download Zip" button on the lower right-hand corner of the page to download the zipped bundle
Usually, the channel bundle will be located within a zip archive. Unzip the archive as necessary.
Bundles downloaded from GitHub will usually have extra identifiers appended to the bundle's filename, such as "-master". Edit the bundle's filename to remove any text after ".bundle"
Copy or move the channel bundle into the Plug-Ins folder on the computer running Plex Media Server
Restart Plex Media Server to make sure that the new channel will be loaded.
LIST OF UNSUPPORTED PLEX PLUGINS FOR LIVE IPTV AND FREE TV AND MOVIES.
Select a Category if needed, then click a Channel to install
Confirm the installation
Once a Channel has been installed, it will appear in the Channels list.
To remove a Channel from your Server:
Open Plex Web App
Choose Channels in the sidebar
Hover over the channel you wish to remove
Click the red Remove button
Confirm you wish to uninstall
Channels will automatically update themselves when your Server checks for new components. This means that once an update is published for a Channel, it should be available on your Server within a few hours.