You can define individual resources or manage them in resource groups, which are collections of individual resources. Grouping resources provides a convenient way to manage access to a set of resources with similar characteristics. For example, you might define a resource group containing applications that are important only to your remote employee, simplifying the process of managing access to those resources.
There is no limit to the number of resources that a resource group can contain. When you create a new resource group, it is added to your list of available resources and groups; you can then use the resource group in access control rules.