Menu | <<<< | >>>> | Click the [Add Equation Parameter Matrix] button

After the [Add Equation Parameter Matrix] button has been clicked, you must enter (put the cursor on) a row cell in the left column for the new equation parameter matrix. Equation matrices have 2 blank cells between them and if you select a cell after an equation, select the second cell. Here, no equations have yet been added, so the left cell above the “Equations” marker has been selected (automatically selected when an empty equation sheet is opened).