changing multiple whole notes to half notes or a way to change the length of multiple notes simultaneously

hey, twas curious if there was a way to change the length of mutliple notes simultaneously with musescore rather than having to change the length of each individual note in a sheet of music...
working on a project to show or play all the possible ways to play the same chord progression by using inverted chords and seventh chords for one, some, or all of the chords in that chord progression for A minor chords. originally I had all the chords or notes as whole notes, but wanted to change all of the whole notes or chords to be all half notes instead in order to shorten up the project since there's several different ways to play the same chord progression with different inversions of the same triad and seventh chords...so if there's a way to change all of the note lengths simultaneously at the same time rather than have to change hundreds of whole notes into half notes, and then get rid of the rests inbetween...cuz that would save me a lot of time and hassle. thanks