Guitar Strumming MS 4

I know this is probably a long shot, but Just curious if there is a way of creating guitar strumming throughout the whole score, or do I have to put the arpeggio symbol on every chord throughout the the score? I am transcribing a piece that has 8th note guitar strumming in the whole piece (up,down, up,down, up, down, etc) - so we are talking 8 arpeggio symbols in every measure. Just curious if anyone has come up with a quick, easy way of doing this in MS 4.
I guess I am thinking like with violins, you can just put the direction "pizz" and the violins know they play pizzicato until otherwise directed and MS 4 knows how to handle the "pizz" symbol throughout the score.

Thanks