I think it's all covered here, https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v232/en/flu_ug/flu_ug_sec_mphase_using_steps_vof.html%23flu_ug_sec_vof_dpm There is/was a tutorial on the Learning Hub, but not on the (free) public last I checked.