It depends on where you are now, what you have already done and what you are willing to do. E.g. if you bench 1pl8 then just bench, that is it. But if you are pressing already 5pl8 while cycling all types of shit from T and deca to winstrol, clenbuterol and what not, then I am afraid you need a professional coach.
So consider one of the options stated below:
1) Take one of Sheiko programmes (or Smolov jr for bench) - they are pinnacle of periodization as long as you speak russian and aren't some dumbfuck, who takes templates and thinks, that you can apply them to literally anyone
2) If you aren't roiding, yet your bench press is impressive, then consider the fact you might be hitting your natty limit...and start roiding
3) Check your diet, check your form, get a coach
And unlike some morons inhabiting this board, I would suggest not benching as often as possible, because you will most probably just overtrain and end up than when you started. If you already bench 3 times a week, then it is enough. You can adjust volume during a training session, but ffs don't do 6 or 7 extremely heavy training sessions (crossing your 90% 1RM for reps) in a week.