Parenthesis

Dawood99 In Word, running a macro containing the following code will enclose the selected text in parentheses

With Selection
    .InsertBefore "("
    .InsertAfter ")"
End With

While in Word 2003 it was an easy matter to customize the right click menu in the user interface, it is not so straight forward in current versions of Office and the simplest thing to do would be to assign the macro to the keyboard (Via File>Options>Customize Ribbon>Keyboard Shortcuts>Customize, or assign it to the Quick Access Toolbar.
I am not sure that it can be done in PowerPoint, but you might ask at:

https://answers.microsoft.com/en-us/msoffice/forum/msoffice_powerpoint?sort=LastReplyDate&dir=Desc&tab=All&status=all&mod=&modAge=&advFil=&postedAfter=&postedBefore=&threadType=all&isFilterExpanded=false&page=1