Google tag manager: add custom code immediately after the opening tag

GTM needs 2 parts of code:
1: Paste this code as high in the of the page as possible:
2: Paste this code immediately after the opening tag:

There are 2 hooks now, but the second one is \’before closed body\’.
That one will not do for Google tag manager second part of code that needs to be placed \’immediately after the opening tag\’.