From a notification
When you see a notification for an incoming transfer at the top right of your screen, hover over the notification and click Accept. The transfer will automatically start downloading to your specified Download folder.
From inside the app
If you missed the notification, don't worry. The Infinit menu bar icon will be complemented by a number representing the number of pending transfers. Click the icon, to open the main view in Infinit that displays your transfer history.
Any row representing a contact for which you have unaccepted transfers will have a white background. Click the row to open the conversation view. Next to any unaccepted transfer, you will see a green icon with a check mark and a grey one with a cross. To accept the transfer click the green icon.
The transfer will connect and then download. A progress bar will show below each individual transfer in the conversation view. An additional progress bar will appear around the icon in the main view, and reflects the total progress of all transfers for a specific contact..