Does OFFBOARD Mode enables mc_pos_control from PX4 firmware

When I make a program in ROS using MAVROS, more specifically the OFFBOARD example from the dev.px4.io, does the mc_pos_control from the PX4 firmware is automatically enabled after I have sent the position command through the program? I do not use the POSCTL mode yet though, but I want to know whether there is actually any position control running in the background