Damian,
I guess you have been handed a flowchart on paper? And you have to do it in
PPT?
Does not sound like any of the connector lines which are present in
PowerPoint. These are all lines that connect directly to the box. You can
make the connector lines end in a circle but that circle will be at the
end/beginning of the line in the anchor point of the object and touch it.
I guess if you want to reproduce that you will have to draw it yourself,
group and copy if need be. Off course these will be not behave as real
connector lines which means when you move the Auto shapes the lines will not
follow.
Am I still making sense?