How do I add the bot to channel admins?

How do I add the bot to channel admins?

The Controller Bot Team

iOS: Go to Channel Info (tap the photo in the top right corner on the channel‘s chat screen) — Admins. 

Android: Go to Channel Info (tap the name in the header) — … (in the top right corner) — Set Admins.

WP: Go to Channel Info (tap the name in the header) — … (in the bottom right corner) — Set Admins.

Telegram Desktop: Go to Channel Info (tap the name in the header) — Administrators.

Note that feature of admin list management is missed in Telegram Web at the moment. Use another Telegram client for this.