Hi @Walter Dyck ,
Our forum is an English forum, it is recommended to post in English to avoid misunderstandings. According to machine translation, your question is one of the columns displays options based on the value of another column.
You can use Power Apps to customize the list/library forms and perform cascading on choice column in SharePoint list.
I suggest you start a new discussion in the Power Apps Community on this issue so that you can get more professional help,there will be very professional people to tell you the steps on how to realize this function.
Also I found a similar thread for you, please check it out: https://techcommunity.microsoft.com/t5/sharepoint/list-of-choice-for-one-column-based-on-another-column/m-p/3383848
A video link is recommended which may help you: [Cascading Dropdowns in Power Apps from SharePoint list](https://www.youtube.com/watch?v=IWEQwGLcW7Q"Cascading Dropdowns in Power Apps from SharePoint list")
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