As of 2018 the salary of register of probate is : $200 https://www.concordmonitor.com/county-government-nh-21211721

This NHPR article gives some info on both. https://www.nhpr.org/politics/2022-10-13/nh-voters-will-see-2-constitutional-questions-nov-8-ballot.

Or seacoast online: https://www.seacoastonline.com/story/news/state/2022/10/20/nh-2022-election-ballot-questions-constitutional-convention-register-probate/10533965002/

The first question was introduced by State Legislation to amend the state constitution to remove references to the office of register of probate. For the amendment you can see that bills progression here https://gencourt.state.nh.us/bill_status/legacy/bs2016/bill_docket.aspx?lsr=2093&sy=2022&sortoption=&txtsessionyear=2022&txtbillnumber=CACR21

The second question is asked every 10 years in NH. It asks if the people think the NH constitution needs to be rewritten at a constitutional convention. Last time it reached the majority necessary was in 1984.