[Drolefille]

At the beginning of each day you find out which chapters you're visiting and in what order. On the first day you'll meet all of them. At the end of the first day you will (usually) rank the chapters by your order of preference.

Then based on the chapters and your own input you get your schedule from the next day. If a chapter drops you, you get matched with the next one on your ranked list and so on until your schedule is full. Therefore unless you absolutely would not be in a chapter, it's in your best interest to rank all chapters.

After pref, before bid day, your process is the same, you put down your top chapters and agree to accept a bid from any of them. Fancy bid matching things happen. If you don't get a bid from your top choice, you can still receive a bid from your other choices.

There are also Snap Bids which happen when you get a bid from a chapter you didn't go back to because your schedule was full. (For example, they were fourth on your list and you went back to your top three, but didn't get bids from any of them, you can get a bid from your fourth but you aren't guaranteed.)