MS Power Point
How to create additional Guide Lines?

Additional Guide Lines cannot be created
by holding Ctrl + Alt key, click on existing Guide Line and drag
by holding Ctrl key, click on existing Guide Line and drag
by holding Alt key, click on existing Guide Line and drag

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MS Power Point
To insert slide numbers

Insert a new text box and select Insert >> slide Number
Insert a text box and select Insert >> Page Number
Choose Insert >> Slide Number
Insert a textbox and select Insert >> Number >> PageNumber

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