Three pre-approved slots are available everyday, except only one per day Thursday, October 22nd, through Monday, October 26th, for Formula One.
You can pre-bid anytime and your bid will be placed for you when you are up. If any portion of your bid is outside a pre-approved slot, the entire bid will be discarded and you will have to submit again. You can bid outside a pre-approved slot, just not prior to being up to bid.
The program will also allow you to bid any day within the leave year (January 11, 2026 to January 9, 2027), so make sure you do not bid an RDO.