Drivers' Union

this has nothing to do with the application
you can control this by using a splice

If it is purely for having a shematic I would leave the control to the application
if you want to indicate how the wiring should be I would put a splice

Anyway suggestion 2 is to avoid
and the the choise for 1 or 3 depends on the components where the wires need to be connected
if it is possible to put 2 wires into one connection

attached is a file with a number of splices I have created

A simple search on the forum would give you a list with answers you your question