I believe your DJ profile is ready to go now, you don’t need mentor to start your stream. Go to slipmat.io start page and in upper right corner you can see “DJ admin” link. From DJ admin page click “streaming keys” link. Copy “ingest server” address and “stream key” to your OBS. Copy also your “video URL”. You need it in next step.
After you have set-up OBS by this guide Configuring OBS for Slipmat & YouTube you can start stream from OBS and go back to DJ admin page. From upper right corner there is “New Event” button. Set-up your event (you need to paste your video URL on this page if it’s not there already) and click “schedule event”. You will be forwarded back to your DJ Admin page where you can now see you scheduled events. Click “Start”. If you can see your video on the preview page you are ready to go (If you cannot see, check your stream settings from OBS). Click “The video preview is correct. Let’s open the chat” button. Click “start” button on your event page and you are ready to start streaming.
I’m quite sure there is better guide somewhere in backstage, but could not find it at this moment. If not, maybe I have to do one…
Good luck for your first stream in Slipmat.io