I am using Scala version 2.10 and SBT version 0.13.8. To build a project I am currently executing the sbt commands through the Intellij terminal but I would like to know the use of SBT Tasks window on the right hand side of intellij idea window. Kindly have a look at the screenshot uploaded 
How can I run SBT tasks (compile, run, package) in Intellij from SBT Tasks? Is my intellij configuration correct?
It looks like you're using an older version of IntelliJ IDEA. That the window displays "tasks" is probably a bug, because running tasks from this window is currently not supported by the Scala Plugin. I still recommend upgrading IDEA to version 2016.3, which also supports a newer version of the plugin.
Instead, you can run them from the terminal as you do now, or create a run configuration clicking on Run -> Edit Configurations. Then click the + button to add a new configuration and choose SBT Task from the list, and entering the tasks you would like to run.
Side note: When using sbt for your projects, the Scala version installed on the system doesn't matter. In fact, it doesn't even need to be installed.
