Step::1 Login to your WordPress dashboard
Step::2 Go to Plugins section and click on Add New
Step::3 Search for “Author Category by Bainternet” plugin in the search box
Step::4 Click on Install Now button
Step::5 Now click on Activate button
Step::6 Click the “All Users” option under Users on the left of the WordPress dashboard.
Step::7 From the Users screen, select an author who does not have admin privileges.
Step::8 Scroll down to “Author Category.” Hold CTRL on the keyboard to choose more than one category and select the categories.
Step::10 Click the “Update User” button on the bottom of the profile page.
Now, your author will only have access to those selected categories.
Visit our Blog for more details. You can also watch the video here.