Thank you in advance. David.
Best answer by Samuel
These are called Alerts, and show payments that have come into and out of your account.
The cards you see should be dragged and dropped on the Slide grid in the row for that particular customer or supplier (it doesn't matter which date, as Slide will automatically move this to the correct incoming/outgoing payment date).
Please visit this page to learn more about Alerts and how these can be matched to any invoices and estimates you have created.