Class 1 (basic )How to change size of plane and tree of catia v5

Hello dosto
Aaj mai aap logo k liye lekr aaya  hu
How to change size of plane and tree in catia v5
Step1: click on start
Step2: go to mechanical design
Step3: part design

Similar to given pic

Step4: for change size of tree
Follow :select any plane and press ctrl then scroll move up and down

Step5: for change of palne size
Follow : go to tools and then options

Step6: select infrastructure and then part infrastructure
Step7: and finally click on display and slide bar desired size of plane

Thanks