en_tn/neh/08/04.md

Mattithiah, Shema, Anaiah, Uriah, Hilkiah, and Maaseiah...Pedaiah, Mishael, Malchijah, Hashum, Hashbaddanah, Zechariah, and Meshullam

These are all male names. (See: rc://en/ta/man/translate/translate-names)

when he opened it all the people stood up

The text is very clear that the opening of the book was the cue to stand.