Depending on the style group the control for power recline will be in different spot. ON the 090s and alike (091, 094, 099, 45003, etc...) the power control will be on the side of the armrest as long as the piece has at least one armrest. If it is an armless piece, the control will be on the side of the seating cushion. On the smaller chairs like 088, 086 and some of the others like 075 it is always on the side of the seating cushion.
Do a search on the forum - you will find tons of info about the buttkickers - it was discussed a lot.
Fusion Collection Seating
Ultimate Home Entertainment