Ok…..basic ‘I should know this….’ question!!

Ok, so my mind is baffled. I installed a cam at +4degrees per the timing recommendations, and my FBO limiter plate people suggest I set my timing at 18 degrees initial. Soooo so I set it at 14….18…..or 22 degrees initial?? Been a minute since I messed w this stuff and prior to, all my cams were set ‘straight up!’