The default grid can be modified by changing the world axis.
When a blank sketch is opened in FormIt, the World Axes are displayed as three red, green and blue lines in the center of the screen. These three lines, define the three Cartesian directions that define the 3D world. The "X" direction is defined by the red line, the "Y" direction by the green line and the "Z" or "up" direction by the blue line.
To rotate the grid, right click/tap on empty space in the scene and choose from the context menu. Drag on the red dot to move the origin and either blue dot to rotate the axes
To reset the coordinate system and grid back to the default setting, right click/tap on empty space in the scene and choose