Note:
BlueDots are only available in the ordered environment.
Choose Home tab→Paths group→BlueDot 
.
Select an endpoint on the first curve.
Select an endpoint on the second curve.
Continue to the select the endpoints until the appropriate curves are connected
Tip:
You can edit the position of a BlueDot using the Select Tool and the BlueDot Edit command bar.
You can use the OrientXpres control to limit the edit to an axis or plane you select.