thanks for your answer.
I forget to let you know that I installed the Template as manual istallation. I have istalled "jdboston" and "plg_system_t3" zip files....
In this case I didn't find the Component as you showed me.
I didn't find "SmartSlider 3 Pro" in the istallation folder,also.
Thank you again.
Actually, Jd team show or smartslider 3 are 3rd party extensions.If you install JD Boston Quickstart these extensions already installed . If you install only the template you need to install these extensions manually yourself. JD Teamshowcase is actually one of our Upcoming Extensions & Smart Slider 3 is a paid extension. I attached the JD Team Showcase extension.
JoomDev is not affiliated with or endorsed by Open Source Matters or the Joomla! Project. The Joomla! logo is used under a limited license granted by Open Source Matters the trademark holder in the United States and other countries.