How to Create a Private or Public Channel on Telegram? 5Telegram Channel avatar size/dimensions The Channel name and bio must be no more than 255 characters long A Hong Kong protester with a petrol bomb. File photo: Dylan Hollingsworth/HKFP. The creator of the channel becomes its administrator by default. If you need help managing your channel, you can add more administrators from your subscriber base. You can provide each admin with limited or full rights to manage the channel. For example, you can allow an administrator to publish and edit content while withholding the right to add new subscribers.
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