Basically what it is is a gym league. There are eight gyms that are all lvl 100 so you can fight them in any order as well as an elite four and champion. To be a gym leader you just ask me and choose a type and Pokemon (i can provide some if you need). To challenge you just find a gym leader who's online and fight them. It doesnt matter what order until the elite four and champion. I'll update the gyms in the comments. If you beat the champion you do have the choice to become the champion but you dont have to. The champion doesnt have a set type. Also if you beat a gym you will get a reward that i havent decided on yet.