From Hostfully Property Management Platform, you can navigate to the Integrations section under Agency's dropdown, and scroll down to Boostly. There you can click on the OFF button to activate Boostly for your agency.
Once it's ON, you will have the option to activate Boostly on property-level. Click on Settings link as below
and now you can choose / toggle ON the properties you want to integrate with Boostly.
Then, you can reach out to Mark at email@example.com or schedule a call with them via https://calendly.com/boostly to determine which Boostly Website Package is best for you, and proceed accordingly.
(Here's the instruction to find your Agency UID, in case that's necessary)
Boostly will work with you directly to design and build out your new website.