Hyphens, En Dashes, Em Dashes

Q. Hi! Would “results sharing” be hyphenated in this example? “Each webcast includes in-session polling and results sharing.” Thanks!

A. According to our hyphenation guide (at CMOS 7.89, sec. 2), a compound noun that consists of a noun plus a gerund should be left open unless listed as either hyphenated or closed in Merriam-Webster. The term “results sharing” isn’t in M-W in any form, so leave it open.

[This answer relies on the 17th edition of CMOS (2017) unless otherwise noted.]