Why Edge and not IE?? IE is still a maintained and supported product by microsoft and still distributed with the OS. Personally I would kick back at that requirement - Blue Prism recommends the use of IE and their browser interface only interacts with IE.
I have had a 5 minute experimentation with the help of the internet. You will need to start Edge using a command line (which you can do with the start process action in the utility environment object), The command line will be %windir%\explorer.exe and the arguments will be shell:Appsfolder\Microsoft.MicrosoftEdge_8wekyb3d8bbwe!MicrosoftEdget
Then you will need to build logic to attach to the running instance of Edge.
You will need to interface with Edge as a Windows application rather than a Browser application, and I recommend you use Blue Prism v6.2 as the new UIA interface might be better for what you want to do than the older Accessibility mode interface.
There is potentially a new browser interface in the pipeline, but I have no timescale for when that might show up in the product.
