
Well, even in your own language you don't know every slogan, quote, saying...
Some stuff is hart to find. When SwampRabbit wrote "Panel" i was searching 10 minutes in Dolphin, Thunar and PCManFM for panel.
Its called Taskbar...

I have something now: Its done with Panel > Add New Items... and then Properties of that launcher
But it seems like you can't add sub folders?
The next thing is Add New Items > Directory Menu
And i made a folder "Shortcuts" for it. That would be like how i do it in Windows. But that way i don't see the programs shortcuts (only folders).