yep most chain tools work in a similar way, it works like a clamp, the chain consists of links and pins you place the chain link into the chain tool and wind the pin press in to move the pin on the chain out ( but not all the way out cause its a pain to get back in if you do ). When its almost out stop, rewind the press back and remove the tool then flex the chain just slightly to separate the chain links.
Practice on an old bit of chain first if you have any.