To create a new slice, open the Gantt chart configuration, choose Slices from the left menu, and click the New slice button.
All new slices are named "New Slice" by default. To give your slice a custom name, simply replace this name.
You can assign issues to a slice by selecting specific issue types or with a JQL query.
When creating your chart, Structure.Gantt will search for the items you specified and apply the custom settings you configure in your slice, before applying your default settings to the rest of your issues.
JQL queries should be based on issue properties.
Queries that rely on time comparisons, time-based functions – now(), endOfDay(), startOfDay(), endOfMonth(), etc. – or other variables that could change independent of issue changes, may not work properly with Slices, and should be avoided.