In order to turn on HubSpot integration on Toolsey dashboard you need to Go to Settings tab and choose Linked accounts.
There please choose HubSpot tab and toggle the radio button to turn it on.
Then you will see a modal window where you would need to select the trigger status of the Lead.
Then hit Submit button. You will be redirected to the HubSpot login page. Please login to your HubSpot account to create the connections between Toolsey and HubSpot.