Step 1: Turn on the computer, open the software, find the page layout of the menu bar above-print the title, and click to enter the interface.

Step 2: After the interface pops up, find the top title and click the button on the right.

Step 3: A prompt pops up to select the required range.

Step 4: Check the box and return to the page. At this time, you can see $ 1:$ 1, and click OK in the lower right corner.