Access GoDaddy then sign in Control Panel of your account
Goto Domain manager
Click [Forwarding Domain] of your domain

4. Scroll down to [Forwarding] section then click [ADD] button.

5. Input your domain name with assigned domain (e.g. www.example.com or blog.example.com ) to [FORWARD TO] field.
Check [Update my nameservers and DNS settings to support this change] if necessary .

6. Click [Preview] to check how it works
7. If it works, click [Save]

8. Access your domain name and check domain forwarding works.
That's all!
Note 1
Our SSL certificate is not installed on GoDaddy's server so forwarded the domain name. So accessing https://YOUR-FORWARDED-DOMAIN-NAME
would return an SSL certificate warning so use HTTP to access.
Note 2
If [Update my nameservers and DNS settings to support this change] is checked, Forwarded will be displayed in the value field.
