How do I rearrange the ribbon toolbar back to the way it was?

The ribbon toolbar in my smartsheet used to show the summation-of-children sign as a standalone, located in the center of the toolbar. For some reason all analytic functions have now been moved to the right and underneath a tab with the icon: '...' This requires a click on the dots icon, followed by a click on the function (such as summation).

How do I change the toolbar back to allow the summation function to be more visible/accessible? I use this function far more than anything else in the Smartsheet.