1. Add this Telegram bot to your channel as an Admin with proper permissions (Post Messages).
2. Once added, the bot will automatically send a message containing your Channel Details / Channel ID to your channel.
3. Copy the Channel ID (e.g., -100xxxxxxxxx) from that message.
4. Paste the copied Channel ID into the setting field above and click Save.

Now clicking the Telegram button on any file tile will automatically copy and send the file to your channel!