TestStand examples for the ASAM XIL Steps for NI TestStand are located in the <TestStand Public>\Examples\ASAM XIL directory. Those are a good starting point which can be modified to fit an application, or copied and pasted into a sequence that you create. In addition, there is some supplemental documentation online that explains more about the specific steps.
One note - the most recent release of these steps (1.4) only supports up to TestStand 2020. We are working to add TestStand 2021 support in the next release.