First, decide how to group your individual tracks into stems. For example, you might group all drum tracks to one stem, electric guitars to another, acoustic guitars to another, and vocals into another. Assign the output for each channel strip to an unused bus, grouping them so that all tracks for a given stem output to the same bus. As you assign tracks to unused busses, aux channel strips with corresponding bus inputs will be created in the Mixer.
	The image below shows a mixer in arrange view, with several drum, bass, electric and acoustic guitars, synthesizers, and vocal tracks. There are four existing aux channel strips as send destinations. Notice that all the channel strips currently output to the Stereo Out. (Click the image to expand to a larger view.)


	

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