ODBC Drivers + No Shortcut Apps

Thank you very much Tim Mangan for the information
Here are the requirement requirements:
Target OS : Win 10 21H1
1. I working on a standalone applicaiton IBM_Netezza which has ODBC drivers and with no shortcuts. while I install the application on target machine, I am able to see the ODBC drivers in the "ODBC Data Source Administrator" console (odbcad32.exe). but when the install the MSIX package in target machine, I am not able to see those ODBC drivers and I tried to open virtual container's cmd.exe with Invoke-CommandInDesktopPackage, but its not successful... got an error " Cannot create a file when that file already exists".

Could you please suggest best approach to handle this instead of Modification Package, as its is a standalone package for me.

2. coming to AppData, I tried to create MSIX VLC player package, at the time first launch run.. I unchecked auto update check option and this option stored in .ini file at user's AppData folder. once after completion of the MSIX package... I installed MSIX package on clean VM and launched to verify whether the Auto Updates were suppressed or not... but its not suppressed? In such scenario, how we will handle the files or setting stored in Appdata location and also with the same scenario, what if the setting stored in HKCU? when I open the package in Edit mode.. I am able to see the ini file in Appdata folder under VFS section, but once we install the app.. its not able to read the data there??
Could you please suggest the best approach to handle these scenarios.
Thanks in Advance.