You can add a comment through the “Review” menu following the steps for older versions. You can also add a comment through the “Insert” tab.
Adding Comments Using the “Insert” Tab
Step-1: Click on the “Insert” tab
Select the slide where you want to add a comment from the slide navigation pane and then click on the “Insert” tab in the menu ribbon located at the top of the screen.
Now you have to click on the “Comment” option in the “Comments” section of the “Insert” menu. It will open a “Comments” sidebar on the right side of the screen.
Microsoft PowerPoint allows you to hide all comments before presenting to an audience. To hide all the comments, follow the 2 quick steps.
The first step is to click on the “Review” tab in the menu ribbon. This will open the “Review” menu.
Click on the “Show Comments” option from the “Comments” section to open a dropdown menu. Now click on the “Show Markup” option from the dropdown menu.