If the courier delivering your parcel is DPD, you will receive a text message in the morning of delivery with your one hour delivery slot. If the delivery date/time is not suitable then you will be given options to either deliver on another day, leave with a neighbour or leave the item in a safe place. DPD does not provide the option to change your one hour delivery slot. Note - if you request that the courier leaves your item in a safe place then you assume all responsibility for the item.