|The router feature that prioritizes network traffic is QOS (Quality Of Service). This is not a simple thing and must be designed into the router by skilled software developers. No hack can do this.|
Obviously such a powerful feature needs to be centrally controlled through the routers administration interface. Naturally access to this interface must be controlled to ensure that only authorized individuals have access. Typically a number of options are available to accomplish this. In many cases administration can only be done with a wired connection to the router. These are all basic security precautions.
If a router does not provide options to control QOS that is a clear indication that it does not have this feature. If the feature does not exist that is end of story. To use the feature you must purchase a router that has it.
I hope this clarifies the situation.