Business hours in a custom field

[Михаил Дорохин]

I'm looking for a custom field, which would allow me to display how much time an issue spent on a specific status during business hours ONLY. Any ideas how I can implement such a feature?

[Alexey Matveev]

You could use an add-on for it. Time in Status

https://marketplace.atlassian.com/plugins/com.obss.plugin.time-in-status/server/overview

If you want to write your own custom field then you would need to go through the issue history  and calculate time in status based on the history.