Associating Android phone to Telegram web, where is Devices section in the Telegram app?

I am trying to associate the web version of Telegram, https://web.telegram.org/ , with my phone. The instructions say to scan the QR code with three-lines menu in the Telegram app on the phone, and there Settings/Devices. But under three-lines/Settings there is no item Devices. Where do I find it? Any other way, such as eg. scanning the code from another app, not from within the Telegram app if I can't find Devices there?