You can create and SFC in a Blank Diagram with >Right Click >Star New Diagram?SFC Draw

When starting  SFC Draw an initial chart is drawn. This has a start, a transition, one step, another transition and an end.

You can then add steps and transitions and branches to build the chart.

Selection Branches can be added around a step or below a step

Steps can be split into parallel branches

You can drag connection ends to re-arrange a chart

You can use Right Clicks to change the order of branches

You can drag from step to step to create a new transition if it is legal

As your chart progresses you may want to hide the details so that you can re-organise the chart quickly. The details can be quickly hidden or restored using the toolbar buttons.