What do you mean by a triad? Maybe you mean a V. In a triad, all 3 members are equally sexually/romantically involved. Sometimes in quads, there are 2 main couples who trade partners. Maybe you just mean you think you'd like to date 2 or 3 guys.
If you want more advice about starting a MMMF quad or MMF triad, please start a thread in the Relationships section!