You can find information about the build in time tracking in Jira here : https://confluence.atlassian.com/display/JIRA/Configuring+Time+Tracking
If you need more advanced options you can look into several good plugins :
...ollected feedback from users around the lack of shortcuts, and we’re here to address that: In next-gen projects, I miss the keyboard shortcuts badly. This is particularly true on the Board, but also i...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event