ArcPro 3.3 introduces the new concept of Presentations. Whilst exploring this new feature I discovered it was impossible to draw a horizontal line graphic! A presentation page offers no guides\grid to snap elements to or short cut keys to constrain a graphic as you draw something. Here is my attempt to draw a straight horizontal line.

You need to improve the usability of interacting with graphic elements. You are clearly emulating PowerPoint so please provide equivalent drawing capabilities