[Hosting] Adding email addresses and related mail records

Oy. I’m setting up email on my hosted site (both site and DNS are hosted with WPMUDEV).

I add the first email address and I’m told I have to add the MX, DKIM, SPF and DMARC records MANUALLY! Seriously, where’s the button to add the records to my DNS. I understand if the DNS is hosted somewhere else, but it’s hosted with WPMUDEV.