Where enter Authorized Domains for Google Calendar Api app

Hello,
in app settings of my
Google Calendar Api
I need to fill Authorized Domains :
https://prnt.sc/on0l82

but I did not find where can I enter this Authorized Domains ?
Authorized Domains “learn more” links opend page description what is it, but I did not find how/where to enter Authorized Domains ?

Thanks!

from Google API https://ift.tt/337PJrw
via IFTTT