Win11 auto run powershell script upon reboot

I am seeking a skilled freelancer to develop a PowerShell script that will automate the creation of a task in Task Scheduler, ensuring a specific shell application launches upon every reboot of Windows 11. Currently, I have a script that modifies the shell but need assistance to elevate it to execute with administrative privileges.

The challenge arises when switching user accounts, leading to a logon prompt. I will provide existing scripts for context. Your deliverable will be a robust PowerShell script that seamlessly sets up the necessary scheduled task for consistent shell management.

I expect it to be tested before I receive it, the freelancer who created the current scripts failed to test everything provided, trial and error is not acceptable to me. Not a massive job but expect assistance to get it working.