Flageolet (string harmonics) in Staff + TAB template

Hello guys,

I'm a guitar player (mainly classical and fingerstyle) and I'm using musescore to make guitar scores. For fingerstyle guitar, there is a very usefull template which you can find in the score wizard: after typing in the informations like titel, composer, etc., then you can choose under "solo" -> "Guitar + Tabulature". This creates a system of two staffs, an ordinary one in standard notation above and a TAB staff consisting of the strings as well as the fret numbers below. The great thing about this is that it links both staffs: typing a regular note in the ordinary staff automatically gives you the correct fret number and vice-versa.

For all non-guitar players: by not pressing the string on a fret, but just touching the string at certain frets (namely fret 12, 7, 5, etc.) with a left hand finger and then plucking the string, you get special harp like sounds. But the pitch of the flageolet isn't the same as the pitch you would get by pressing the string (due to the physics of strings), e.g. on the high e-string: By pressing on the 5th fret, you get an a, but by playing a flageolet, you get an double octave e''. But musescore doesn't know flageolets and therefore thinks the number 5 on the e-string is an a or a double octave e'' is not playable on a guitar (you need fret 36).

To fix this: is it possible to deactivate the connection between the two staffs for some beat lengths and then typing the correct fret number and the correct note pitch individually? Or any other useful way? I think the problem with making the fret number invisible is that if the ordinary fret number is a two digit number, the space in the line is to big for a one digit number, and vice-versa. But this way, you could add some angle brackets around the fret number, which is a very common way to notate flageolets. (This is also standard at https://musicnotes.com)

Thanks for your help, Gargantuar