The two options are Pinching/fimming, but they both work on the same principle. You are cutting off the top growth, causing the axillary buds/growth on the nodes underneat the cut to flush out and become as dominant as the original top was, due to a hormone change in the pl
When you fim, you are just doing the topping at a location where there are two nodes very close to each other, so the four growth buds can all grow at relatively similar speeds, and have similar heights.