In order for people to comment on your blog in Squarespace, you will first need to create a public blog. After you’ve created your blog, you will need to add a commenting feature. To do this, click on the “Comments” tab at the top of your blog, and then click on “Add a Comment.” You will then be taken to the “Commenting Settings” page.
Here, you will need to add your username and password in order to allow people to comment on your blog. After you’ve added your information, click on the “Save Changes” button. Now, people can comment on your blog by clicking on the “Comment” button at the top of any post, and then entering their username and comment.