DM Electrical 
Quick Label Insertion Insert Room Number.
The Insert Room Number dialog box will open.
The Insert Room Number dialog box will remain in front of all windows to provide smooth transitions back and forth from Excel to the DM dialog box.
Click on the Excel cell in which you wish to place a room number label. Select the callout you wish to enter in the Insert Room Number dialog box and press Insert Room Numbers. Design Master will place the label in the cell you selected. You may continue inserting room number labels by continuing to select the desired Excel cell and room number and pressing Insert Room Numbers. When you have finished inserting room number labels, press the X button in the top right corner to close the dialog box.