Change default font for everything?

I want to be able to reset the default Musescore font for all text in all scores from Edwin to Times New Roman. Ideally, what I would like is to have the default font for all newly created scores automatically be Times New Roman, and also to be able to change the font of all text elements in any existing score to Times New Roman with just a few key strokes. I've searched the Handbook and Forums and found things about changing various individual text element fonts, but nothing about doing a global, one-time, automatic reset of all text such as I've described. Does anyone know if this can be done, and if there are any explanations of how? Thanks for any advice.