To access the configuration screen: login as Jira administrator, go to Jira settings → Apps → Manage apps → Work Time Calendar section, and click Configure.
"Configuration" screen shows the general configurations. Its screen has 3 tabs: Global options, Default options and Projects' options.
''Google Integration" screen allows to configure Google calendars integration.
"Locking of Reporting" can be used to introduce policy of disabling reporting for closed periods.
"Custom Script" screen gives ability to inject custom logic into Work Time Calendar.