You can remove selected points from the residuals calculation by selecting the rows to remove and recalculation residuals. The primary use is to remove points with the highest residual value from the calculation to see effect on the fit for the remaining points. This action works on the results of the Fabric Residuals tool.
Tip: A high residual value for a point may be due to a bad join between the plans. So use this to help find bad joins between things like close reference marks.