Who is The Older Apprentice, Charlie from The Kalahari Typing School for Men and what is their importance?

Charlie is the older apprentice, and he is also employed at the Tlokweng Road Speedy Motor by Mr. Matekoni. He is obsessed with girls, and girls are all he ever talks about. Charlie regularly ridicules his younger brother about his new religious beliefs, but after the occurrence with the hydraulic lift, Charlie begins to see that there actually is power in religion. Charlie is young, bright, and a good worker. He also proves to be a good friend to both Mma Ramotswe and Mma Makutsi.