How do I compute an "OR"

Hi,

I am trying to follow a tut and have come up with an "or" and do not know ,and cant yet work out how to make it appear in my demo,

can anyone show me how to get it please ?

Right click the event, and select the "or" button

Right click the event, and select the "or" button

Thanks i can see it now was looking for just 'or'