Each application offers two basic functionalities during execution: The user can start a process (and create a so-called process instance) and he can view the existing instances that have not yet been completed. These "instances in progress" are displayed in the instance list. For each BPMN model, a dedicated instance list is generated. During modeling, you can freely define which data should be displayed in the instance list.
Especially for role-based applications, not every user should have access to all instances. Therefore, the Designer also provides a role-based authorization concept for the instance list that allows you to define which user is authorized to see the instance list of the respective process.
If you want to learn more about the instance list, refer to the chapters Configuring the Instance List and Running Designer Applications in the Designer guide.