hi everyone,
sorry if this has been in topic already done, might have missed it.
i was descending to my approach yesterday at lepa, i was told to go into a  hold, when palma app  started giving me vecotors i coudlnt switch LNAV of if i pressed  heading hold it would switch off but it only flies the current heading, if anyone could tell me how to switch of LNAV that would be great


thanks in advance