2How to set up a Telegram channel? (A step-by-step tutorial) 1What is Telegram Channels? Users are more open to new information on workdays rather than weekends. Select: Settings – Manage Channel – Administrators – Add administrator. From your list of subscribers, select the correct user. A new window will appear on the screen. Check the rights you’re willing to give to your administrator. The optimal dimension of the avatar on Telegram is 512px by 512px, and it’s recommended to use PNG format to deliver an unpixelated avatar.
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