The image below is a schematic flow diagram of a typical oil refinery that depicts the various unit processes and the flow of intermediate product streams that occurs between the inlet crude oil feedstock and the final end products.
In order to check-in into a hotel, the person must be 21 years old.  If the person is younger than 21, then a parent or guardian can  give permission for them to check-in. 1 person found this useful.
Many times, the desk clerk is one of the few people guests will see at a hotel, so they must represent the business well. When checking guests in, a hotel desk clerk will need to collect information from the guests such as a reservation number, their names and phone numbers, and payment information.