Resources can have sub-resources to help organize activities on portions of the entire resource. For example, splitting a field into 2 smaller areas allows you to rent out half of the field for different team practices.
Resource management can be accessed from the Settings page or by starting to type "Resources" in the Global Search Box. From here you can create, view or edit existing resources, sub-resources and blocking rules.
Select the Resource Name to navigate to the Resource edit page. From there, click on the "+" to create a new Sub-Resource.
Enter the Sub-Resource name and Short Name.
See Organizing Sub-Resources on how to create Short Names so that sub-resources are displayed in the order desired.