Gen 2 Paj. Idle Adjustment

[RedCoder1]

4d56 Engine.Had my idle adjusted last weekend.This was regarding the problem that it turns low when the aircon is turned on(just had my aircon installed prior to this).Ngayon mukhang mababa pa ng konti kasi pag naka-D ang transmission ko tapos hindi naka-on ang compressor rpm is a bit lower than the second line on the meter and i start to feel the engine vibrations.Paano po ba i-adjust ito?Napansin ko kasi sa may bandang likod ng makina ang ginalaw nila.Ang alam kong ina-adjust yung sa bandang harap ng makina.Yung maliit na bolt.Thanks or the help!