Helpers will send advertisers time slot suggestions for pick-ups. The time slots can be during the same day or the day after.
You can always request new time slots if the suggested time slots don't work for you. Keep in mind that you don't necessarily need to be home in most cases, just place the items you want to get rid of outside. You can wait to confirm the pick-up once you are back home and checked that everything is gone.
If you create a "Here to THere" ad you may add the time slots that best suit you. Helpers canb apply with other time slot suggestions if your slots expire.