Place the cursor where you want the tick mark
Go to Insert
Select Symbol
Click More Symbols
Choose Wingdings or Segoe UI Symbol
Find and select the tick mark
Click Insert
Click Close
Alternatively, type 2713 and press Alt+X
Alternatively, hold Alt and type 0252 on the numeric keypad, then change the font to Wingdings
Alternatively, use Insert > Symbol > check mark if available
