How do I transfer dmarc to new administrator?

My dmarc stuff is working fine and has been for awhile.

A new technical contact is taking over for one of the domains I’ve been managing. The email provider for that domain will likely change, and I’ll no longer be managing the DNS records for the account.

How do I transfer the dmarc tag, record, and management to the new technical contact?

It is important that this be seamless and transparent to the client (and Registrant) – there must be no interruption of email services for the Registrant.