In the Object type box click Microsoft Equation 30 and then click OK. Just switch to Insert tab and click Equation Insert New Equation to toggle on Equation Tools. Insert an equation with Equation Editor.
Use the symbols templates or frameworks on the Equation toolbar to edit the equation.
Word Show Equation Editor. Use _ for subscript and for superscript. Getting started with the add-in. Click the arrow next to the name of the symbol set and then select the symbol set that you want to display.