From the orange boxes, click on "Blogger".
As you can see, the records are ready for creation, but first, you need to find your CNAME Verification Host и CNAME Verification Target.
The custom CNAME record verifies that you are the owner of this blog. To find it, go to your Blogger account. Then, click on "Settings" and Find "Publishing". Click on "+Set up third party URL for your blog". Enter your domain name. Note that the blogs may not be hosted on root domains (ex: yourdomain.com). You need to add a top-level domain (www.yourdomain.com) or subdomain (blog.yourdomain.com). This is valid also for the "Host" field in our Records Templates.
After that, a screen with the required CNAME records will appear. They are shown in this screenshot.
Please note, that the above values are just examples. You must copy the values of the second CNAME record and paste them in the white fields of your Blogger Records Template. Then, activate the template by clicking on the orange "Activate template" button.
In Blogger, Click on the orange "Save" button.
You are ready! Now, your blog in Blogger has a custom domain.