Notes fall outside the margin

Looks like that's just too many notes to physically fit in the measure at the current sizes. You'll either need to make the notes smaller, or the page bigger, or split the measure onto two systems. It's also possible some style settings changes in Format / Style / Measure would allow the notes to come enough closer together to fit, although I'm not very optimistic.

If you need further assistance, please attach the actual not as opposed to just a picture of it.