How to Connect Custom Domain in Google Sites

1. Create Website on Google Sites

Access https://sites.google.com/   to create the new website

2. Add domain custom

Go to the settings, select Custom domains, then click "connect domain".

3. Domain verification

Next, add the domain and click verification and click continue on the "domain" option. 

4. DNS Setting

After getting the DNS configuration for the domain, copy and paste it in the DNS Manager address/value section. Before that, select the txt type.

Then click verification on the previous Google sites page. Make sure its work

On the same page, click next to connect to the third party custom domain. DNS settings are the same as number 4, just change the cname type