It is sometimes necessary to fine-tune a city's production. To do so, you'll want specialists. Specialists do not work in the city radius so they don't contribute to city production of food, shields, or commerce. Instead, they produce extra happy faces, scientific research, or tax revenue.
- Entertainers: An entertainer produces one happy face.
- Scientists: A scientist produces extra scientific research.
- Tax Collector: A tax collector produces extra tax revenue.
To create one of these specialists, on the City Display, click any square currently being worked; the production icons disappear and an Entertainer appears among the population. If you wanted an entertainer, you're done. If you wanted a different specialist, click on the entertainer to cycle through all the specialists.