We support WordPress multisite installations on our Pro and higher plans. If you’re currently on our Starter plan, you’ll need to upgrade in order to utilize multisite.
As setting up multisite correctly is complicated and requires special attention, please contact us for help if you wish to switch from single-site mode to multisite mode. Make sure to also check out our post on an introduction to WordPress multisite, and learn about some of the pros and cons of this setup. In some instances, you might be better off managing them with a third-party tool and keeping the sites completely isolated.