Step 1th, open the Word2010 document window, and make a word diagram ready to create the template as needed. Chart making methods see Creating a chart in a Word2010 document.
Step 2nd, select the chart you created, click the Save as Template command on the Type tab of the chart Tools/design ribbon, as shown in Figure 1.
Figure 1 Click the Save as Template command
Step 3rd, open the Save Chart Template dialog box, keep the chart save position unchanged, enter a name in the File name box, and click the Save button, as shown in Figure 2.
Figure 2 The Save Chart Template dialog box