Sure. If you select "Play Now' you will see a list of the games that you can play. To the left of each game icon there are usually three smaller icons. From top to bottom: your current ranking (e.g.gold 3), the options cog, a favourite heart (or not). IIRC you might not see those of your view settings are too compact, in which case there is likely a cog or similar at the top of the page to change your view.
I do agree that for an arena season the length of game and the bidding should be fixed. That's where voting / discussion on the options takes place before the season begins. I've neither seen nor participated in those though.