The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
In this case, what he needs to do before he can print the photos is the following.
If he has chosen a negative that he wants to work with, then he has to get ready his proper chemical solutions, avoiding contamination between them. Then he has to put the negative in the negative carrier. He has to place the print paper in the frame. Henry has to focus on the correct image, decide the size of the image, then adjust the larger lens to make sure the focus is correct. The brightness of the image has to be the correct one. What comes next is to expose and cover the paper correctly for the seconds required. Then Henry has to pass the paper to the chemical solutions trays. The next step is to rock the paper for 15 to 25 seconds. Wait for 2 to 3 minutes before cleaning it with running water. And that's it. You can check if the photo has the quality you wanted.