Moving Blocks around your canvas is easy with your mouse. Only the Blocks that are selected will be changed.
See Managing Block Selection for more information
To Move Selected Blocks
Left click on one of the selected Blocks and drag your mouse, up, down, left or right until the selected Blocks are in the desired position.
To Resize Selected Blocks
Left click on the relevant border of a Block and drag your mouse, up, down, left or right until the selected Blocks are the desired size, or
Use the Block Properties panel and manually enter the values of Width and Height for finer control. Press Enter to accept the values.
Connector Line Properties
Editing Block Text Contents
Connecting Blocks To Other Blocks
Managing Block Selection