Hello,
I've got a many-to-many relationship between three lists in SharePoint in the attempt to create a an IT Equipment Purchase Request PowerApp. The brief background of the relationship between the lists are below....

I'm not comprehending the logic behind the flow to achieve the manager approval. I know that our managers will want to see what is being requested to be purchased. Currently I have an HTML table that's sent to the user as a "Quote" of the items being purchased and the cost that's sent via PowerApp, see below.
If there is any way that I can tie in the HTML table that is emailed to the user after submitting the request would be absolutely fabulous!
Any assistance would greatly be appreciated, thanks!