Positioning Chords

I can't seem to wrap my head around the positioning of chords. I am building kind of a lead sheet to notate just my bass line along with the vocals and chords for the guitar player.
Up to now, I had chord changes at the beginning of bars and a note in the vocals I could connect those chords to.
Now I have a part, where the chords change on every beat, while the singer just holds one long note over both bars. How can I keep the chord symbols in line with the rhythm and still have them above the vocal voice where they belong? Linking them to my bass line, which does play the correct rhythm, places the chord symbols between the vocal and bass staff and I can't move them where I want them. For the time being I added a second voice to the vocal staff, but that doesn't belong there and I'd rather get rid of it, but not for the price of having my chord symbols jump up or down every couple of bars ...

I'm still starting out both with transcription and Musescore and find the interface rather unintuitive, so any help would be appreciated!

Thanks

Tom