Ok. At first I understood the function as "add time in every situation". Adding more time in the virtual training would mean to decrease the timer, because then you have more time to reach the gold medal.
Maybe it is possible to add this function as well in next updates.
i had this thought also. simpyl pause game spam 8 and pause and repause. you will see time left go through the roof. that being said i did all VR on gold legit prior so have not tested with them but worked that way for brutus armor with timers