Time in status
Time in status tells how long the issue is sitting in current status. It is a good indicator of how fast issues are being processed, also it shows if there are any obstacles in completing them. If an issue sits too long on a certain stage, it might be good to understand why is that - is it a problem with testing, development, or client acceptance.
In order to use this feature, go to Agile board -> Options, and check-in In status. Click apply.