Can't configure "share by email"

I am new at nextcloud and would like to edit the email tenplates like written in the documents. But inside the admin-panel I don’t find a way to configure the templates. I found the templates as json on the server, to edit that is definitly not a good idea I guess. Anyone can help me what I do wrong?

Nextcloud v12.0.0
share by email v1.2.0