As we have discontinued the support for Flash galleries in Lightroom CC/6.
If you want to create Flash gallery, you need to use the last version of Lightroom which supported Flash galleries(v 5.7.1)
There is on the website of Adobe an App with website Templates. Price 10 dollar I believe.. Can I use these templates with Lightroom CC2015.
No,you can not use any other Adobe application templates in Lightroom CC 2015.
Thanks for your help.!!!
Glad to help.