Satrang Technologies

No, it is not available in classic.

With the help of  link How Do I Install/Upgrade/Uninstall  an AppExchange App, you can easily understand how to install/Upgrade/Uninstall the app from the...

This app allows you to quickly find opportunities with respect to Accounts. Without redirecting to any tabs.

Yes.

Let’s take an example of adding a lightning component on Account Record  Go To Account -> Select any record -> Click on setup icon -> Click on Ed...