Hi Hardy

What functionality are you looking for?  What do you need to do?

Hi 

I need this drag&drop-mechanism on a customized screen, which is part of a customized entity ;-)

Jeff is it you ? ;-) I saw it too late.
Greetings from Karlsruhe

Hope, you are fine
Cheers

Hardy

Hi Hardy.  It's me.

If you are using an uptodate version of the Advanced Customization Wizard the behaviour should appear in the generated page.  Is this for an upgraded system?

Hi Jeff, Yes. It is a upgraded system. I used the wizard a couple of years ago ;-) 

If you have a test environment then please run the wizard again (using the latest version).  You should then see the difference in the code between the old page and then new version.