split a bar into 2 rows

Hi, I’m a very new user in Dorico. I’m trying to reproduce the attached sheet in Dorico.
How can I split the same (2/4) bars in two rows? How can I connect those eighths?

https://drive.google.com/open?id=1nkbnu2bks2Ihx044cYmYG7xVQ3H3e-iH

Welcome to the forum, becseigy. Hopefully you’ve started by creating a piano instrument so you’ve got two staves, or if you need to add an extra staff to a non-piano instrument, you can do so (in Dorico Pro) by choosing Edit > Staff > Extra Staff Below. Then you can cross notes between staves using N and M. See here for more information.

Thank you very much, that’s exactly what I need.

Thanks again for your quick help.