How to 'unhide' your friends My Day on Messenger?

I hid some of my friends My Day on messenger and i dont know how to undo it. or:I hid some of my friends My Day on messenger and i don't know how to u

I hid some of my friends My Day on messenger and i don't know how to undo it.

or:I hid some of my friends My Day on messenger and i don't know how to undo it.

or:I don't no

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