The VBL administers your supplemental pension provision? See here if this is the case.
You want to convince your Kita, your university, your government agency, your care home - whatever is your institution - to support the demands to the
Or: VBL does not administer your supplemental pension provision. However, you are member of an association, a party, or a movement which you want to
convince to support the demands?
We are no experts but we can share our experiences. Maybe, it works similar for your institution?