The Select Column, Row, and Layer dialog box can be used to change the selected column row or layer. To display the Select Column, Row, and Layer dialog box, select Grid|Set Selected Col, Row, Layer... Enter the desired values in the edit boxes and click OK to set them.
There are three other ways to change the selected column, row, or layer that do not involve this dialog box.
1.In the corner of the top, front, and side views of the model is a Selection Cube (see p. 9) that displays the column, row, or layer that is selected. Clicking on the Selection Cube changes the selected column row or layer. For more details see The Selection Cube.
2.The Page Up, Page Down, and arrow keys on the keyboard change the selected column row or layer. The left arrow key decreases the selected column by one. The right arrow key increases the selected column by one. The up arrow key increases the selected row by one. The down arrow key decreases the selected row by one. The Page Up key increases the selected layer by one. The Page Down key decreases the selected layer by one. If the “Shift” key on the keyboard is held down while pressing one of these keys, the selected column, row, or layer is changed by 10.
3.Select Grid|Select Column, Row, or Layer or click on the Select column, row, or layer button 
. Then click on the top, front, or side view of the model in the desired column, row, or layer to select them.
