Insert a switch and contacts

Let's insert a knob for the S01 switch, and then add for the S01 switch.

Do the following:

In the Symbols window, select Switches and insert the switch symbol (OPEN/0/CLOSED):
Select the switch S01 from the drawing.
Right-click, and select Add auxiliary contact. The Adding contacts menu opens.
Select a normally-open contact, and indicate the insertion point.
Define 1 as the upper number and 2 as the lower number.
Insert contact S01:3/4 as described.
After inserting the contact symbols, click OK in the icon menu.