Place the cursor where you want the tick mark
Go to the Insert tab
Click Symbol
Select More Symbols
Choose a font such as Wingdings or Segoe UI Symbol
Find and select the tick mark symbol
Click Insert
Click Close
Use the keyboard shortcut Alt + 0252 for a tick mark in some fonts
Use the Unicode code 2713 and press Alt + X
Copy and paste a tick mark from another document or website
Use the Developer tab and insert a checkbox if you need a clickable tick box