Use this procedure to add lines to a manual grid. A manual grid allows maximum control over the grid, but requires that you specify the exact number and position of grid lines.
- Select the ceiling grid to which you want to add lines.
- Add grid lines:
If you want to… Then… add grid lines to the X axis of the grid click 
. Then, click the location on the X axis where the new grid line should appear. add grid lines to the Y axis of the grid click . 
Then, click the location on the X axis where the new grid line should appear. The Bays worksheet lists all of the bays on the selected axis, their distance from the start point of the grid, and the spacing between the grid lines that define the bays.
- Alternatively, on the Properties palette, click Bays
for the X and Y axis, and change the number of lines in the Bays worksheet. - To add a line, click under the last number in the Bays list.
A new line is inserted with default values for distance and spacing. You can edit these values by clicking them and entering new values.
Note: You cannot enter a line number for the new line. The line number is provided by the application after you close the worksheet. - Click OK.
Tip: To add lines to the ceiling grid, you can also right-click the grid, and click X Axis/Y Axis Add Grid Line.
Add Grid Line.