1. Go to the “Send to warehouse - Inbound Shipment” category
2. Click the "Add New" button
3. Choose "FBA (self-shipping)"
4. Specify the parcel data
5. Add all the products you send in the parcel to the warehouse. Or create a new one right here.
6. Check the correctness of the data. If you made a mistake, you will be able to edit the item later. If the data is correct, click "Create".