How do I customize the Zoho URL to myDomain URL?

How do I customize the Zoho URL to myDomain URL?

Appreciate your help. 

I am in the Standard Plan. How do I customize the Zoho generated URLs to a myDomain URL?

Some of our application users are put off by the long Zoho URL when they are submitting their personal information. They have a trust issue because of the long Zoho URL. How can we sort this out?