Read the forums... Thats what they are made for. But,
1. The bot supports auto leveling Wars and ninjas (when I used it anyways) you simply type @cglevel 120 - or whatever level you want it to level to. I could tell you everything this bot could do about hunting/leveling but they made a forum for that purpose.
2. CoGen only supports Cliented. Clientless is exactly what it sounds like - You don't use a client. (Meaning you don't open Conquer. The bot does clientless

) Clientless doesn't have any near future plans on returning so your question doesn't matter in regards to CoGen (Thats why I stopped using CoGen) However, Dean has made it work very efficiently by running numerous accounts VIA Cliented (As many as your CPU can handle.) I was running 15, probably could have ran more.
3. Yes.
4. Take this with a grain of salt. No you do not. You can run bots on your own IP.. BUT that is the dumbest way to ever bot. GMs will ban your *** fast. They will tie any bot through IPs and will most certainly get your main account. Also, with the anti-bot system by TQ, more than 2-3 accounts per IP will get you restricted Then banned very fast. Hence why if your serious about botting, you buy proxies. Not shared ones either, best route is private proxies.