SiteOrigin Mirror Widget

We use the SiteOrigin Mirror Widget to control the text and color of the covid button on our home page. We’ve been asked to allow our calendar person to edit the mirror widget. We have a “Calendar management” role that allows her to add, edit, and delete calendar events and access the media library so she can add feature images to events, but nothing else.

I’d like to add access to allow the Calendar Management role to edit Mirror Widgets but no other post, pages, widgets, etc. Just the calendar control and that one widget type.

Is that possible?

The page I need help with: [log in to see the link]