In the template I have included a group as the default value under "Destined for" (Bestemd voor). However, when creating the article, it is not shown, but the default of my Joomla site is shown. I have enabled the option for "overwrite settings" in the template. What am I doing wrong?
I am not sure you are talking about the same fields in both cases.
The 'Access' field should not show up under the editor by default. So hard to say what is going on on your setup.
If you can reproduce this on an online environment to which I can get access, I am happy to look into this.
The problem is solved. If you apparently indicate in the menu item that a category applies, then the access level is not assigned. This must be empty and then the access level entered in the Content Template is selected. Please close the ticket.