I can't figure out how to make different track widths starting from same place but to different components. For example, a thin power track going to an led but a thick one going to a motor. The board is very cramped and I need to save space. I want to use the design rules so that means different nets but how to have different nets that are connected? I know how to do this manually after routing is done but that is not OK as there are lots of manual tracks to change.
So in the example circuit, how would I make the "thick track" say 48mil for the motor but thereafter the track for the LED only 8mil? I tried using a single connector and using different netnames but it only shows up as a single net in the design rule? Does anybody have suggestions for how to achieve this using the design rules for autorouting?
It's not currently possible to use the Autorouter in the way you describe.
It's also not currently possible to assign width properties to nets or to give a single net more than one net name in any way that would allow you to define one part of a net to be associated with one width and another, differently name part of the same net to associated with a different width.
Your best option is to route the important or variable width tracks manually first then tell the Autorouter to ignore those tracks.
Depending on your requirements, it may be better to manually route the board anyway and not rely on the autorouter to introduce lots of unintended SI and PI problems.