Renaming group names

You can rename them as described by [hugobox] back in 2018 by the code below, but I wonder if it's possible to rename it permanently while running, which includes the group name displayed in the Dashboard overview tab : billede .

Is that possible ?

 $("p.nr-dashboard-cardtitle").each(function(){
            if($(this).text().trim() == $scope.oldGroupName.trim()){
                p = $(this);
                p.text($scope.msg.payload);
                 $scope.oldGroupName = $scope.msg.payload
            }
        })

Yes - hover over the group in the dashboard sidebar and click the edit button. You can then change its name to whatever you want.

Sorry, I meant while running, allowing users to rename groups permanently, by an input form or ui-text input and save buttons.

No, you cannot reconfigure nodes dynamically without deploying the change.