Adjusting the size of an individual symbol without changing all instances of the symbol

[Guest LeoJ]

I am drawing some trees on a plan with tree symbols. How do i change the size of each tree without effecting all of the others AND also keeping it a symbol, in case I want to change the shape/style of all the trees at once. 

 

TIA

 

 

[Jonathan Pickup]

You can scale a symbol with the Object Info palette or the selection tool