CTA Review Board: How to draw in PowerPoint?

During many situations as an architect especially during your CTA review board you need to create architect artifacts. For most times most people where able to draw on a white-board in front of your customers, the CTA judges or your colleagues.
The new situation of mostly virtual meetings makes it necessary to find new ways of conveying architecture artifacts.

My study buddies and me developed a way of drawing architect artifacts in PowerPoint. I want to make it clear, that way of doing has some advantages, especially looking much cleaner, but also takes a lot of practice. Drawing by hand is still a valid option for CTA review board.