Note articulation in chord

First of all I need to mention that I really love MuseScore. Have been using it for some months now to create the sheet music for piano pieces I write, and I am learning a lot about notation from just working in MuseScore.

Now I have come to the situation where I have an arpeggiated chord, in which I want to articulate the highest note (which needs to be slightly louder). By default, the articulation gets placed below the right-hand part of the chord (in this case). Now, I can manually move the articualtion up and down. But I am running up to a question on notation theory:

How to properly indicate which note should be articualted within the chord?

This might get really confusing, for example when the middle note of the left-hand part of the chord should be articulated. It seems that music notation convention does not allow for this. So for this case I might just leave the articulation out and leave it up to the player. But I am wondering whether I might be missing something.