eavy lding , I do not enable transcoder function . How do I finish this setting ? thank you

I have a question want to solve . My source streams are 1.5 mb bitrate (.ts. strtam ) and transport to wowza server . I want to wowza output 1 mb bitrate to CDN.( only one 1 mb bitrate output not multi-bitrate ) Because avoid server heavy loading , I do not want to use transcoder function . How do I finish this setting ? thank you