Running Windows 10, trying to set up PCs in Kiosk Mode. Everywhere I turn I find how to assign a user to pre-existing Apps in Kiosk Mode, but no one explains how to add an app, in my case an Internet Explorer Shortcut file, to the app list.

You'd think this would be mentioned somewhere.

I tried using Powershell using an administrative account on the PC, but got the following messages:
Get-AppxPackage : Access is denied
Access is denied.
At C:\windows\system32\windowspowershell\v1.0\Modules\AssignedAccess\AssignedAccess.psm1:127 char:22


Application was not found. Enter either a valid AppName or AUMID

Can anyone help?

Thanks in advance!