I am often not at home. How will I receive my parcel?

When ordering online you can often enter an alternative delivery address. This, for example, can be your place of work if your employer agrees to this. You can issue GLS with a signature release authorisation. This way the driver can leave the parcel at a freely-accessible location of your choice at your address. If you did not choose one of these options in advance, a neighbour might accept your parcel.
Or GLS may take it to the nearest GLS ParcelShop.