Budget day: you have 24 hours to change your budget as often as you want. It doesn't work as if you go into the budget page, change your numbers, leave the page, and you are locked in. Imagine that! You can change your mind during that 24 hour period, and readjust your budget!
Free Agents: when bidding on free agents during the FA period, they don't start signing for at least 24 hours. It doesn't work as if you go into the FA negotiation page for a player, make a bid, leave the page, and you are locked in to that bid. Imagine that! You can change your mind during that 24 hour period, and either change your bid or withdraw it altogether!
Lineups and Pitching: in between game cycles, you can change your lineup and your pitching rotation (except for next game starter). It doesn't work as if you go into the lineup or pitching staff pages, make some changes, leave the page, and you are locked in to lineup/staff for the next game. Imagine that! You can change your mind during that 8 hour period, and either change your lineups, upcoming pitching rotation, configuration of your bullpen, pitch counts, etc.!
What a novel concept!