2. After clicking Insert, click Tool Insert Symbol on the right.
3. Then choose to insert other symbols, because if you don't insert them at ordinary times, the commonly used symbols above will not be displayed.
4. Then find Wingdings 2 in the font selection. When selected, the pattern with a check mark in the box will be displayed below.
5. Once found, select it and click Insert. If you want to insert more than one, you can click it several times in a row.
6. In this way, the symbol with a tick in the box is inserted.