Use the Zone Editor in cPanel

Tutorial: login from the Client Area or the direct link.

Find the Domains section and click the Zone Editor link.

Domains
Select the domain for which you want to manage records, and then click the Manage button.

For easier viewing, you can filter the displayed DNS records.
Manage Zone page
– click a record type from the Filter list (A, CNAME, MX, SRV or TXT). 
Each page will only display the records for the specific type you selected.

The record table contains the following columns for each record
Name
The record’s name.
TTL
The record’s Time to Live (TTL).
Type
The record’s type.
Record
The record’s information.
Actions
The option to edit or delete the record.

Add Record
Click the Add Record button.
The New Record row shows up in the record table. 
Type the Name, TTL, and Record text box. Choose the Type from the drop-down menu.
Click the Save Record button.

This function erases any modifications that you made to your zone records.
The system attempts to save the domain’s TXT entries.
We recommend that you record any changes that you want to save before you use this feature.