Yes. We recommend all our DNS customers that they test Securly on a single machine before a full-fledged deployment. Taking this approach allows you to tailor the Securly policies and settings to the unique needs of your environment before having all of your users subject to Securly policies.
To do this change the local DNS setting on your test machine to point to the Securly DNS servers provided. The video here displays the complete process and is recommended to be viewed for seamless deployment.