You are not authorized to manage any project message when opening login.helmholtz.de/upman

When I open the group info page for the gfz (https://sensors.gfz-potsdam.de/info/groups/gfz) and click on the button to manage the hifis vos (https://login.helmholtz.de/upman/) I get the message that I'm not authorized to manage any projects:

While I understand the technical behaviour here, it is unfortunate that we link here to a page that just delivers en error message without further information (what are VOs, how can I manage my own one, ...).

So first is to think where be could point to on that page & change the links (and maybe the texts) acordingly.