Formal:
* Aloha kākou: This is a very common and respectful greeting that literally translates to "Hello to all."
* E komo mai: This means "Welcome in" and is a polite way to greet a group.
Informal:
* Aloha ʻoe: This is a popular greeting that means "Hello to you" but can be used for groups as well, especially in informal settings.
* Aloha kakahiaka: This means "Good morning" and is a good option for greeting a group in the morning.
* Aloha awakea: This means "Good afternoon" and is a good option for greeting a group in the afternoon.
* Aloha ahiahi: This means "Good evening" and is a good option for greeting a group in the evening.
To make it more personalized, you could also say:
* Aloha kākou, mahalo nui loa no ka hiki mai: This means "Hello everyone, thank you very much for coming."
Remember, the best way to greet people in Hawaiian is with a smile and aloha!