play two in epsxe?

want to play two in esxe 1.9.0 emulator want to know if you have one way to play in control and the other on the keyboard why not have two controls to have a way to do this want to know step by step already tried some pergunteando the same over those teach are as follows: it's just you enable multitap and go in two control and configure the keyboard for more already did that and when I play has veses that control one does not work or has veses that simply put the keyboard buttons and when I play does not work when I press start button or any other already tried in digital and not please the teach me if I'm doing wrong I think many have this doubt.