It is not clear whether you want this throughout the score or just for a few cases. If you want it throughout the score create a custom time signature that has the groupings you want. If just s few cases, modify their grouping using the items in the beam properties palette.
Comments
It is not clear whether you want this throughout the score or just for a few cases. If you want it throughout the score create a custom time signature that has the groupings you want. If just s few cases, modify their grouping using the items in the beam properties palette.
See https://musescore.org/en/handbook/4/beams#Controlling_which_notes_are_b… for more information. If that doesn't help, come back and explain in more detail what you are trying to do and at what stage you are having difficulties.