Choose Home tab→Explode group→Modify button.
In the graphics window, position the cursor over the flow line and drag the cursor to edit the flow line.
Tip:
You can drag either end of the flow line to change its length.
For flow lines with joggles, you can edit the location of the joggle. For event flow lines, mid-segment flow lines can be moved by dragging the handle (A). For annotation flow lines, mid-segment flow lines can be moved by dragging the handles (B) or the segments split and then the individual segments moved (C).
Use the explode pathfinder to display and hide individual annotation flow lines.
The Flow Lines command can be used to turn on or turn off the display of all the flow lines.
The Flow Lines Terminators command can be used to turn on or turn off the display of all the flow line terminators.