When using QuoteMachine integrated with Lightspeed Retail POS, your customer can pay online but also in Store.
You can always collect payments using the "Receive payment" button available on every QuoteMachine invoice.
However, if you want to process a payment using your Credit Card Terminal connected to Lightspeed, you will need to use Lightspeed to control the terminal.
This is the only case when you should use Lightspeed to collect a payment so that QuoteMachine can always keep your payments synchronized.
The following video shows you how it works: