Dissolve The Prior Key Signature

You find the button in the toolbar - category < Clef / Key >.

Click at the position, from which the key signature should be dissolved, and click on the corresponding button.

For every change of key signature, a new section is internally defined automatically!

Important: If you use transposing voices, so C-Major won't appear as dissolved key there. (See "show voice(s) as transposed ")

Please note that sounds (and all voices all at once) will overtake your new key-statement and MIDI playback takes it into account!