MS Power Point
How do you add degrees of transparency to shapes such as arrows, so that the slide background shows though?

Use the Transparency slider in the Format AutoShapes dialog box
Use #D style 4 button on the drawing toolbar
All of above
Use the Set Transparent Color button on the Picture toolbar

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

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

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