To edit an existing or create a new DNS record, you need to log in to your control panel (cPanel). Depending on the type of DNS record you are adding, you need to do the following:

A and CNAME Records - If you want to create or edit A and CNAME records, you do this by going to the Advanced DNS Zone Editor, which is under the Domains section in cPanel.

MX Records - If you want to create and edit MX records, you do this with the MX Entry icon found under the Mail section in cPanel.

SPF and TXT Records - If you want to create and edit SPF records, you do this by using the Email Authentication icon in the Mail section of cPanel.