This consists of one ballot that is called out all at once in a “tally” method which is done by marking each choice with a marker.
Here is another method that uses counters and includes a live feed so that an instant replay can be done. This is done in pairs of candidates in each race so each ballot is tallied several times.
Clint Curtis and Beth B from Texas help demo the method they prefer which is easier on the eyes and perhaps results in fewer errors.
Both of these methods claim they can process 100 ballots with 20 races in about an hour.