Turns in multiplayer works just like 1v1 Scrabble Go match.
Turns will follow the order of how the players appear above the board, going from left to right.

Each player is given seven letter tiles which can be used to form words on their turn. Any letter tiles that are spent in a turn are immediately replaced with new tiles from the tile bag.

The first player combines two or more of their letters to form a word, and then places that word on the board to read either across or down with one letter on the center "star" square. Diagonal words are not allowed.

Players can add one or more letters to those already played to form new words. All new letters that are placed must form a word . All horizontal or vertical rows of letters must form a complete word in the same fashion of a crossword puzzle.

Players get full credit for all words formed or modified on his or her turn. For example, if your opponent puts down the word "join" and you add "-ed" on the end to make "joined", you'll get points for the entire word, not just the "-ed"