How To combine Eight Notes with dotted Quater Notes on a Piano Score

In the attached screenshot you see a part of a Piano Score.

In this score there is a combination from Eight Notes, with dotted Quater Notes (excuse me if using wrong terms i am not a musician ).

Whatever I try I don't get this combination in MuseScore.

How do I create those combinations with MuseScore.

In advance I Thank your for your help.