Are you referring to the AutoCorrect Options button[1]? If so, move your
pointer onto the little blue bar to cause the button to appear. Although the
bar only appears for a fraction of a second initially it will reappear for
an indefinite period if you move the pointer a little once it disappears. It
will remain visible as long as your pointer remains there.
There is no setting to control how long the bar stays visible.
[1] A "screen tip" is something different, such as what appears when you
hover on a toolbar button.
HTH |:>)
Bob Jones
[MVP] Office:Mac