In step 1th, open the Word2010 document window and switch to the Insert Ribbon. Click the Chart command in the illustrations group, as shown in Figure 1.
Figure 1 Click the Chart command
2nd step, in the Open Insert Diagram dialog box, click the Administrative Templates button, as shown in Figure 2.
Figure 2 Click the Administrative Templates button
Step 3rd, open the folder where the chart template is located, right-click the chart template file that you want to delete or rename, and do the appropriate action, as shown in Figure 3.
Figure 3 Deleting or renaming a chart template file