Torii integrates with Harvest and syncs the users, roles, last visit time, and other useful information.
Go to the Torii Integrations page and click on the Harvest tile in order to connect.
Follow the on-screen instructions and grant Torii access to Harvest.
The authentication is done via the OAuth protocol
Notice that Harvest only allows for full "Read and Write" access permissions. Choosing “Read” access in Torii will make Torii self limit itself to performing "Read" operations.