In the help topics, search for ‘Traverse Resection’. Here is what it gives for your question:
“If you plan on doing a simple 2-point resection, enter the data to the backsight point then the resection point. In this special resection case, the resection point must like clockwise of the backsight point.”
The trick here is that for 2-point resection is the clockwise note.
If you enter more than one resection point (RS) in a traverse, TPC automatically switches to a LeastSquares solution for the computed resection.