1. First, we need to open the word document that needs to be operated

2. Then we need to click Insert.

3. Then we need to click on the symbol and click on the special character.

4. Then we need to click on special characters.

5. select registered and click insert. This is very important.

6. You can insert the registered trademark R mark in the word document. The method is very simple. In this way, you can add a sign in the upper left corner of WORD paper.