Can two-month-old babies be held upright?

Patient's question:

My daughter is two months old. My mother-in-law often holds her upright, and I'm worried that this might not be good for the baby's physical development. I mentioned this to her, but she thought I was being picky. Since I can't argue with the elderly, I feel very frustrated. I want to know the scientific way to hold a baby.
What kind of help do I need: Can a two-month-old baby be held upright?

Doctor's answer:

The way to hold a two-month-old baby can be divided into two stages:

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