Project proprties are defined when you create a new project. This is a great place to define properties to track what kinds of projects you are creating or even whether projects are over-scoped or under-scoped.
In the example below we created a new project property that defines a list with options for project type.
When you create a new project you'll be able to select the project type from the list of options we defined above.
Next help article: From Properties to Metrics →