To correct option naming or not

I've dropped few words on menu naming mess earlier.

Remove "a" from Add tab group to a new collection.

A good example already exists there - Move group to new window.

BTW When you add 6 cakes to sister's 5 cakes, you are left with zero cakes. Your cakes belong to the target group now. So, Copy tab group to new collection instead of Add would be better.

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