Powershell GUI Form

I have made a powershell GUI Form that does a few tweeks, however i need to see whats happening while its running.

I have attached the powershell studio file so you can see the white output box i would like to populate as an example

one of the tasks is to turn off UAC, I would like the script to write to the box say in Blue, "UAC Being disabled" then if it completes OK, it then writes in Green "UAC Disabled" but if it fails its writes in Red " Failed to disable UAC

I want this white box to be scrolling so i can see all thats happend, but when each task is being written, the txt box will focus each task

Would also like the script to keep the UI Responsive

I would like the script to be easy for me to edit and add function at a later date

Hope that helps
any questions please ask