Change a part's properties such as size, position, color, material, and orientation (rotation).  
Also add a spawn location to control where you join the game. 

Properties:

Position - x, y z coordinates of where the part in located in the world

Size - x, y, z values of the part's size

Rotation - x, y, z for angular orientation of you part

BrickColor -  named color of the part in named values

Color - matches brickcolor but gives you RGB

CanCollide - things can bump into the part during game play

Anchored - the part is fixed to a position

Transparency - a scale from 0 - 1 that controls the transparency or opacity of you part.