Gianmarco, I put a suggestion in for the idea that you can create Non-Character Sheet Journal items to take this sort of role. They'd have Edit/Use permissions like a Handout, but what they would contain is a premade token. So you could either: build a standard 'targeting token' (like a Target Icon) with an Aura on it OR build a more complex looking icon which is scaled to the correct size. Then when players use it, they could just drag it to the Map.