Setting the "Run As Admin" button on a Windows app via Script/Shell?

I maintain an xplatform desktop app that uses Kaju for self-updating and a script than must be run in Admin mode to start a Windows service. So initially the app was set to highest available user rights, but then a customer of my customer demanded the app to run in user mode. I could put that script under elevated mode with an MBS command, but I cannot do so for Kaju – I guess.
If I have the app compile in elevated mode, it won’t run for a normal user – Windows will prompt for Admin access and if denied will do so with the whole app. So I put it into normal mode, which works limited as stated, and as 99% of users will have no issues with the app starting in admin mode, I’d like to have InnoSetup which I use for the Win app to set a checkmark to the “run as Admin” file property if not told so otherwise.
Is this possible? Are there any other solutions?

You might get some clues from

Its not straight forward. If you run your updater elevated and it is responsible for launching the new version of your application then that will run elevated.

We also have a cross platform (macOS & MS-Windows) app that has a built-in auto update feature. The method we used to solve this approx. 14 years ago was to use two auto update helper applications which are both launched by the main app:
• Helper App 1 is launched elevated using a similar method described by Wayne.
• Helper App 2 is launched as normal so that it has the same privileges as your main app.

Helper App 1 detects when the main app has quit, performs the updating tasks and then quits.
Helper App 2 detects when Helper App 1 has quit and then re-launches the new main app.

We provide both helper apps as part of the update download so that we can change what the update process has to perform.

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