Hi @dgarmor ,
This is something lots of users have been looking for and the good news is that it seems the next version will have this option, according to this: https://community.alteryx.com/t5/Alteryx-Server-Ideas/Schedule-Configured-Analytic-Apps/idi-p/594300...
You can see the last post from nov/24 that it was implemented, so hopefully we will see it in version 25.1
But as of now (24.2), you cannot set the parameters of an analytical app while scheduling.
Best,
Fernando Vizcaino