While this step is not required for WooCommerce integrations, we highly recommend that you utilize CRONTAB instead of the default wp-cron. You can read a little bit more about CRONTAB here. In this article, we'll briefly summarize why we ask that you use CRONTAB.
The very basic summary is that CRONTAB makes your website load faster than wp-cron does! Because CRONTAB runs on your web server instead of through WordPress, it loads pages in (on average) roughly 0.3 seconds, while wp-cron can add up to a second to your load times. This may sound insignificant, but this time adds up!
If you have any further questions, please feel free to get in touch with your Project Manager using the messaging feature in the Onboarding Center.