Thank you for contacting support. Please note that Aspose.Diagram API mimics the behavior of Microsoft Office Visio. We can add and connect various Visio shapes while creating the new or editing the existing drawing. Based on your provided picture, we can also re-layout the shapes as per Visio layout options. Please go through the help topics there: Add and Connect Shapes, Lay Out Shapes Automatically
Please feel free to reply us in case of any confusion or questions.