If you are using third-party nameservers, you will require certain information from your nameserver provider to set up a DS record. You will need the following information

• The Key Tag field is a short numerical value that identifies the public key used to sign the DNS zone.
• The Algorithm field identifies the cryptographic algorithm used to create the digital signature.
• The Digest Type field identifies the cryptographic hash function used to calculate the digest of the DNSKEY record
• The Digest field contains the calculated hash of the DNSKEY record

Once you have above information from your Nameserver provider you can add a DS record.

1. Go to the My Domains page in your Zoho Domains account, where all your domains will be listed.
2. Click the Manage button of the domain you want to change DNS records. This will take you to the domain management page.
3. Click the Manage DNS button in the domain management page.
4. Navigate to the Domain Security tab.
5. Click the Add DS Record button and provide required information as mentioned above.

6. You can add another DS record by clicking Add New Record.
7. Save the changes by clicking Save.
8. Wait for the DS record to propagate throughout the DNS system. This can take up to 24 hours.