Navigate to All entities > Workloads > + Create a workload. See Create and define workloads to know more on how to create a workload.
Enter the name for the workload, and select the required account from the drop down list box.
Click the + icon next to the Entity Type = All option and enter the condition sap.system = {SAP System SID} on the filter bar.
Click + Add this query to add the query to the workload definition.
Click Create a workload to create the workload.
The workload will be visible on the All entities UI and includes all the entities tagged with the SAP System.