First, head over to https://app.datatrics.com/channel and search for Lightspeed.
Click on the green "Integrate" button and you will be redirected to the Lightspeed Settings screen.
You need to fill in the following details:
Key & Secret
Contact the Customer Service department of Lightspeed eCom for more information about obtaining an API key. Note: Lightspeed eCom can only supply API keys to the owner of the webshop and when you have an Advanced or Professional subscription.
Select the server you want to connect Datatrics to, the default is live.
Select the language you want to synchronize with Datatrics. Is your store is a multi language store, you need to duplicate the channel within Datatrics for each language.
After saving the page with the requested details, Datatrics will synchronize your catalog, orders and customers.