You can set a job up for any recurring schedule, but you can also create pre-defined recurring schedule templates to make it really easy to schedule out a year's worth of work on a maintenance or service contract.
You can also schedule two different types of service-type work:
1. Regular Recurring - This includes work like lawn care or grounds maintenance where the work happens at very predictable scheduling intervals (e.g. weekly or bi-weekly)
2. Irregular Recurring - This includes work such as fertilization or week control. It's repeatable work that happens at irregular intervals. (e.g. twice in spring, once in summer, once in fall)