How to Let Multiple Authors Post on a Blogger Blog

Adjust the Blogger Settings for Your Blog
1. Sign in to Blogger
2. Go to the Settings for your blog. Click the link for Permissions.

3. You should see a display like the image at the beginning of this article. Click the 'Add Authors' button to add one or more new authors to the list of people who can write posts for your blog.
4.

After you click the 'Add Authors' button, a form opens. Enter the email address for each new author you want.
5. Blogger sends an email invitation to each person you listed in Step 4. If they agree to participate in writing the blog, they respond to the email affirmatively. Blogger does the rest for you.