Yes, that is not a problem. Anyone can pick up your package at a bpost pickup point as long as they have the barcode of your parcel. You can find this in the confirmation email, in the My bpost app, or on the notice of absence you received in your mailbox.
Did DHL eCommerce leave a notice of absence in your mailbox and do you need to collect your parcel at a DHL RegionHub? Then always bring the DHL card and a valid form of identification when collecting the shipment.