In the Pro version of Tooltips you have the option to set the positioning of the tooltips: Top (default), Bottom, Left or Right.

There is a global option in the Tooltips system plugin settings that will affect all tooltips.

But you can also overrule this in the {tip} tag by adding add a position parameter with the value top, bottom, left or right.

Top
Bottom
Left
Right

{tip title="Tooltip Title" content="Tooltip text..." position="top"}Top{/tip}
{tip title="Tooltip Title" content="Tooltip text..." position="bottom"}Bottom{/tip}
{tip title="Tooltip Title" content="Tooltip text..." position="left"}Left{/tip}
{tip title="Tooltip Title" content="Tooltip text..." position="right"}Right{/tip}

In the Tooltips system plugin settings you also have the Auto-positioning option to make the tooltip show in a different position when there is not enough room in the default position.