Learn Croatian: Pomozite nam, molim vas.

The ending -ite marks it as the formal or plural imperative (command) form. You use this when telling multiple people, or one person formally, to do something. For a single friend, you would use the singular informal ending and just say pomozi.

Why do we use nam here?

The verb pomoći (to help) always takes the dative case in Croatian, because you are literally giving help 'to' someone. nam is the short dative word for 'to us'.

Is pomozite meant for one person or a group of people?

It can be either! Croatian uses the plural form for both groups of people and for showing respect to a single person (formal 'you'). The phrase molim vas at the end matches this, as vas is also the plural or formal 'you'.

Why does molim vas mean 'please'?

Literally, it means 'I ask you'. molim is the 'I' form of the verb for asking or praying, and vas means 'you'. Together, it is the standard, polite way to say 'please' in Croatian.