Install Microsoft 365 FOR ME ONLY

Hi everybody,

I setup two distinct user on my Mac: "Andreas Uhlig" for personal use and Andreas Uhlig, Ministry" for business use. I have a long history working with iWork for my private / personal use. Now I want to install Microsoft 365 Business Standard for the user "Andreas Uhlig, Ministry" only.

I absolutely want to separate personal software and use from business Software and use and I don't want the Office to interfere with or even appear on my personal user profile.

I can not select "Install for me only" ... only "Install for all users" and "Install on a specific Disk" can be highlighted/selected.

What am I doing wrong?

Please assist. Thanks a lot.

Best