As far as I know, librarians as well as other public service workers with certain skills have been drafted in to do contact tracing. I don't think it is a matter at this stage of a shortage of people. From my day to day experience, many teachers are putting significant time into still teaching where at all possible. I know people want to help but the best thing people can do is adhere to the advice given. If they need more people to help, there are plenty of people there.