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In this version the controls are a mess...

movement
WASD: move
hold right click: toggle turn camera
hold mouse wheel button: toggles camera up/down by moving mouse
e/q: move up/down
space/ctrl: move up/down

To follow a character you can do it by the menu located at the top left of the screen, or the contextual menu, clicking over the character you will open it, in both menus there are a camera icon, once you are following it, you can use alt + mouse wheel to zoom in/out.

hand
right click: toggle hand
mouse wheel: move hand away/close
hold left click: interact

cosmos editor

It's like in the sims 4, to modify the volume of a part you need to click and drag over the desired part.

Also there are a menu located at the top left of the screen where you can change the name, walk and idle style, skin color, genitalia, haircut, hair color and eye color.

You can enter to cosmos mode from the contextual menu from the character, the button shows a popup with the text "cosmos mode" in it.