• Start the app from the Add-ins tab on the Ribbon or with the command FlagStone.
• Select a set of flagstone sizes. As you know, the set should be large enough. The bigger the size you choose, the more options you have to fill the layout properly.
• Then you will be asked whether you want a Rectangle layout, or a "Freestyle" layout. A rectangle layout will have 4 straight edges and flagstones on those edges will be aligned to fit. Meanwhile, a freestyle layout is just to fill a polyline area. At the edge of a freestyle layout, flagstones are not aligned to fit.
• Next, you select polylines. Note that the only straight polyline is supported.
• The app will run and you can see its progression in the window. You can cancel it if it takes more time than expected.
• Once done, the app will bring up Autodesk® AutoCAD® TextWindow, to show some logs and a quick flagstone size schedule. Then you will know how many flagstone tiles of each size are laid.
• The results are like in the screenshots.

The installer that ran when you downloaded this app from Autodesk App Store will start installing the app. Or, double-click the downloaded installer to install the app. You may need to restart the Autodesk product to be able to run the app.

To uninstall this app, exit the Autodesk product if you are currently running it.

On Windows 11 and 10 version 1703 or later press Windows+I on the keyboard to access Settings or click or right-click the Windows Start button and then select Settings. Click on Apps (optionally followed by Apps & features). On older Window versions click Control Panel > Programs > Programs and Features or Control Panel > Add.

• Often, it happens that the app can't find a right tile to fit in at some position. Then, an error red tile is placed and the app will continue to run.
• The Rectangle layout is the closest one that fits. It depends on the polyline's dimensions. You can adjust it manually or make another run to find a better result. To get more varying results, you can change the input by shrink or enlarge your polyline some inches.