If you mean create a single transaction that contains multiple transfer operations that pay out to different users, you can do that now. It is easy to do programatically from a library like Wax.
If you're looking for an app to do it, instead of a library, I know at least Clive can do it.
Thanks for answering. I see there are some options using the CLI but of course those aren't friendly to normal users. I can't understand why it's not been implemented in a GUI already.
Guess that if you need something like that, you need to do it yourself. I asked for it to Key Chain devs but they showed no interest.
I will pick the thread of your mention about Wax library when I have some time to stop by.
Cheers
Note that Clive isn't really just a CLI, it has a TUI (which is basically just a GUI that will also work on terminals).
Yes, a TUI is something at least, but not for average users though. It would surely fit my needs anyways, thanks for pointing me on that way ;)