Gabester

Hi everyone, New to the forum and first time posting. I am trying to assign midi channels to control the midi send and receive on specific channels so I can mix external synth sounds with the G1 when using the step sequencer. There is a midi chart which makes it look straight forward but I can not find the settings in the synth. Also I always get midi channel one playing the (the solo synth) no matter what number the basic midi channel is set to. Hoping someone can advise. Many thanks Gabe