How do I edit the page of posts area

Do you want to do this for one particular post or for multiple posts? To do it for one post, go into the post editor. Scroll down and look for a section labeled Discussion. If you don’t see such a section, click the Screen Options tab in the upper right corner of the window and check the box labeled Discussion. Then scroll down to the Discussion section, uncheck the box labeled Allow comments, and click the Update button. You should no longer see a comment form or any comments for that post.

Ok, I appreciate your help, but i′m fresh in this subject. Where I can find this “post editor” ? I want do disable comments for all posts. Thanks.

If you want to disable all future comments, you should probably do this first:

1. From the admin dashboard, click Settings → Discussion.
2. Uncheck the box labeled Allow people to post comments on new articles.
3. Click the Save Settings button at the very bottom.

Now you have to go and remove the comment sections from your existing posts:

1. From the admin dashboard, click Posts → All posts.
2. You will see a list of all of your existing posts. Or at least the first 25 if you have written more than 25 posts.
3. Towards the top, you’ll see a checkbox next to the word Title. Click that checkbox and that will automatically select all of the posts on that page.
4. On the Bulk Actions drop down list, select Edit, then click the Apply button next to it.
5. A section will open up, labeled BULK EDIT. For the Comments drop down, select Do not allow.
6. Click the Update button.

Your comments should now be disabled for all of the posts listed on that page. If you have more pages of posts, repeat steps 3-6 for each page of posts.

Thank you for your precisely and fast answer! I have successfully disabled the comments for all the posts. It worked very well.