Sometimes, you may want your variables to be shown to a user in a specific order. Making this change is simple.
Hover over the row of the variable you'd like to move. Make sure your mouse isn't hovering over a link.
Drag and drop the variable into the position you'd prefer.
Verify that the new order looks like you expected it to, using the Preview on the right-hand side of the screen.
Click either "Save" or "Next Step" in the bottom right corner.
Understand how Blueprint Variables work and what every Variable Type means.