Now, I saved the file with ; separator. The three most important information I have image_path, category and single_person. After a little further reading single person has a list having ids of the coordinates of the head rectangle. If 0 then no one in the image, else if 1 there is one person, else more there are more people. I can use this column as my label and look for if there is one person in the image or not then use category as further info. In this case, I have 3 distinct labels.
image_path,train_test,category,single_person
030424224.jpg;1;miscellaneous;[1,2]
052475643.jpg;1;miscellaneous;[1,2]