MS Power Point
The difference between Slide Design and Auto Content Wizard is

Slide Design asks your choice in steps but Auto Content Wizard does not let you make choices
Slide Design does not provide sample content but Auto Content Wizard provides sample content too!
AutoContent Wizard is just the wizard version of Slide Design
Both are same

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MS Power Point
You can add multiple subordinates to a position by

Clicking the subordinate button as many times as the desired boxes
Clicking the subordinate button as you press and hold shift
Clicking the subordinate button each and every time you add a subordinate
All of the listed here

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