Trying to find out how to change the resolultion for a given user - not for the whole
system.

I run an app designed for 800x600 for a given user account and would like
that the system changed to that res, but only for this account/user.

Is that possible?

Update: Added the user to sudoers and tried to alter the res using
kxconfig but that change the whole system...

How does one controls settings for a given user?

I thought I could do it as root but apprently Im too stupid to understand
how. I looked in the docs but nothing about "Having users" and how to control it.
Maybe I just search for the worng words.