Take a look at the Tools Options in the tool options panel … (that will be nicer soon … )
"The Tool Options Panel for the “Circle Tool” has checkboxes for each of the 5 types of layer (circle layer plus 4 spline layers) to select which layer type(s) will be created by the tool. It also has “Spline Points” which sets the number of Spline Points that will be used in the new Splines, and “Point Angle Offset” which determines where on the circumference of the circle the Spline Points will be. " Circle Tool
have a nice drawing holidays …