Protect Document: Formatting restrictions – Word in Office 365

For example, we will limit the block text formatting. On the other word, it can’t change format:
The script is:
Go to the ‘File tab / Info’
Click Protect Document’ drop-down list
Choose ‘Restrict Editing’
1.Formatting restrictions: Click ‘Setting’, choose ‘block text’ only
2.Editing restrictions: Choose ‘block text’ only
3.Start enforcement: Click ‘Yes’, set the password

Save and Close the document
Re-Open the document with password, it can’t change format of ‘block text’. The format tool box is BLANK.

ps.
Ctrl + 1: Zoom It
Ctrl + 12: pointerFocus