We will be posting a thread on how to submit. It is not difficult, luckily, but to gently introduce you to it:
1. You would prepare you fic for posting as normal except you’d put in the collection name in the collections slot
2. The collection will automatically hide your fic and keep it anonymous until the collection opens and later when fics are revealed
3. When you come off anonymous, you will update the “publishing date” on your fic so it shows up in recent works

A more detailed thread with photos will be released when we approach submission dates/check-ins. Until then, I hope this explanation eases your worries.