When using your calendar in FileMaker WebDirect, you can include it in a layout just like any other deployment option.
The only difference is that you must use Server-Side Async to allow you to modify events by dragging & dropping, and double-clicking, without interacting with the FileMaker Pro client software.
If you’re using your WebDirect calendar on an iPad, you should enable Touch Enhancements, or add &cal_touch=1 to your url.
If you’re using your WebDirect calendar on a smartphone, you should use the Mobile layout designed for smartphones.