Refer to your machine manual.
This function must be enabled and adapted by the machine manufacturer.

This cycle enables you to program a ridge in two dimensions and then transfer it onto a cylindrical surface. With this cycle, the control adjusts the tool so that, with radius compensation active, the walls of the slot are always parallel. Program the center path of the ridge together with the tool radius compensation. With the radius compensation you specify whether the control cuts the ridge with climb milling or up-cut milling.
At the ends of the ridge, the control will always add a semi-circle whose radius corresponds to half the ridge width.