Is there a way to 'tag' multiple locations on google maps without directions?

I'm doing a project and I have to show all the places where an architect's projects are all over the world and I was wondering if I could do that on google maps.|||I dont know about that but you can just click on your ''Prnt Scrn (Print Screen)'' button on your keyboard and it just takes a screenshot of the window, you go on Paint, cut out that image and just put some color on the place you want to show.