In one sentence, describe what the following article is about:

It’s the blue and white paper airplane icon labeled “Telegram.” You’ll usually find it on the home screen.  It’s at the top-right corner of the group.  Now you’ll see a list of group members. This selects that user. If you are modifying a supergroup, you’ll have the option to set special permissions for this admin. Use the switches to enable or disable your desired permissions. It’s at the top-right corner of the screen. The admin is now added.
Open Telegram. Tap the group you want to manage. Tap the group’s photo. Tap Edit. Tap Add Admins. Tap the person you want to make an admin. Tap Done.