This chapter is one of the last chapters, as you are expected to already know Redmine. Thus, to customize the issue list, you need to know how to use custom queries. To configure and troubleshoot email notifications, you need to know which settings should be specified in the administration pages. To customize personal pages, you need to be familiar with the information that is shown in the blocks. And so on.

Perhaps this could be a good chapter to end the book with, but Redmine is not just a tool with a fixed list of features. It has a great special feature that makes its feature list nearly unlimited. This feature is the plugin API. There are a lot of plugins for Redmine with very different functionalities—from just adding a feature to turning Redmine into a different application. So, in the next chapter, we will review what plugins are, how to find the plugins that you need, and other related topics. Additionally, we will review some interesting plugins there.