Press to instantly grab the Connector Tool. To draw a right-angled (orthogonal) connector, simply start dragging—Visio defaults to right angles if the shapes are aligned vertically/horizontally. To change the connector style later: Right-click the connector > Style > Curved or Straight .
This is a hidden gem. Copy a list from Excel or Notepad (e.g., "Step 1\nStep 2\nStep 3"). In Visio, go to > Paste > Paste Special > Text as Diagram . Visio will generate a flowchart shape for every line of text.
: Give your diagram a polished look instantly via Design > Themes . Hover over themes to see a live preview of color schemes and font changes.