As soon as you add items to the cart, you can see a green bar at the top of the window.
if you click Go to cart button you (right side of the bar), you will enter the Cart page.
As you can see in the next image, the cart page lists all the items you have selected while browsing the catalogues, providing also information regarding the size of the download (in MB).
As the download procedure could take a few minutes/hours (depending on the size of the download and/or the speed of your Internet connection), while downloading you can keep on worlking with the Application.
Don’t be afraid if your download has not been completed and you need to shut down the compter, as the Application will automatically pause it (keeping the download status at the moment of shutdown) and start it again next time it runs.
This article is valid for DomuS3D® 2017 and later versions