How do I add an OR condition?

I have tried searching for it,but all I find are discussions related to using OR statements,and documentations about events in general. Help?

construct.net/en/make-games/manuals/construct-3/project-primitives/events/how-events-work

Look at 'Or' blocks

(The key is to click at the very left side of the block, not on an individual condition).

Thanks.