Mapsly exchanges data with your HubSpot through its API and allows SSO (Single Sign-On) so that your users log into Mapsly with their HubSpot credentials. To start the trial, you must be a HubSpot Administrator. If you are not HubSpot administrator, please refer to this help article first.
To start your Mapsly trial:
You can always find a full installation guide for HubSpot in Mapsly help center. Click on chat icon 
at bottom right to contact Solution Engineer in case you need any help.