How to choose Export codec in Premiere Rush?

I see a lot of posts on what Rush will import but, I need to know what Rush will support based on output codecs. I have no options (that I see) to publish in a specific file format given a specific codec. All I get for options are, 'Facebook 720HD, YouTube, etc.'. Um, I get you have some novice users but, that doesn't tell me anything. I need to know file format or wrapper, full-resolution dimensions, bit rate, and codec. I do not understand what 'Automatic' means. How does the system know automatically what settings I need? I assume this is how we make Adobe Media Encoder useful? Why are these things not included in a single program?