Will other members get notified when an admin makes someone a group admin in WhatsApp? In WhatsApp groups, I don't want other members to get notified that it is I who made them group admin.

Will other members get notified that 'certain person has made you admin' when an admin makes someone group admin in WhatsApp?
On WhatsApp, anytime someone joins/leaves or there is a change of privileges, in the chat there is a green notification in the middle saying that X person made Y person an admin.

There is a notification for it, although if you don't want your friend to see it you might be able to get away with it by spamming a bunch of stuff afterwards, although I wouldn't necessarily call that foolproof.