What is a one-sentence summary of the following article?
Double-click the Word document into which you want to insert a checkmark. If you want to create a new document, instead select the Word app icon from your Applications folder, click File, and click the New Document option. Scroll to the point where you want to insert your checkmark, then click it. You should see a blinking cursor appear there. This menu item is at the top of the screen. A drop-down menu will appear. You'll find this option at the bottom of the Edit drop-down menu. Doing so opens the Character Viewer window. It's on the left side of the Character Viewer window. You may first have to click the "Expand" icon, which is a box-shaped icon in the top-right corner of the window. You'll find several different checkmark symbols in the middle of the window. Doing so will insert it into the Word document at the cursor's position.

Summary:
Open your Microsoft Word document. Select a place to insert the checkmark. Click Edit. Click Emoji & Symbols. Click the Bullets/Stars tab. Find the checkmark symbol. Double-click the checkmark symbol.