Test points are only created when you import an IPC-356 Netlist file. Test points are primarily used when performing Netlist Comparison, https://numericalinnovations.freshdesk.com/support/discussions/topics/14000002413
Test Points appear as Circle Outlines with one of the following:
1. Top Side Test Point: Downward Triangle
2. Bottom Side Test Point: Upward Triangle
3. Top and Bottom (i.e. Thru-Hole): Both Downward and Upward Triangles.
(Screen capture showing Test Points):