Customizing a Slice
Once you've chosen the items to include in a slice (based on Work Item Type or a JQL query), you can adjust various aspects of their appearance or behavior by clicking the +New section menu and selecting the properties you want to customize.

The following properties can be customized for each slice:
You can include as many or as few sections in your slice configuration as you need. If you do not specify a custom property within your slice configuration, the default configuration will be used.
Work Estimates
By updating this section, you can apply custom work estimates to any work items matching your slice criteria.

In the example above, time estimates for the work items included in the slice will be calculated based on Story Points, regardless of what the default configuration.
To learn more about setting work estimates, see Work Estimates Configuration.
Progress Calculation
You can specify a unique method of progress calculation for work items within the slice.

For more information about configuring progress calculation, see Progress Configuration.
Manual Scheduling
The Manual Scheduling section allows you to override the default scheduling configuration. This can be useful if you have multiple fields for scheduling information or need to prioritize different scheduling methods (automatic, manual or sprint-based) for different sets of work items, or if different teams use different fields for scheduling.

To learn more about manual scheduling, see Manual Scheduling Configuration.
Fixed Durations
You can specify where fixed duration values are stored for work items within the slice, and the format of those values.

To learn more about fixed duration attributes, see Fixed Duration
Dependencies
You can set up custom link types to be used with each type of dependency within your slice.

To learn more about using dependencies, see Working with Dependencies. To learn more about configuring dependencies, see Dependencies Configuration.
If you are linking two work items with different dependency link types (because one or both work items are part of a slice), the link types of the originating work item will be used.
Lead/Lag Times
You can also set up custom Lead or Lag times for each dependency type within your slice.

To learn more, see Dependency Lead/Lag Time.
If you are linking two work items with different lead/lag times (because one or both work items are part of a slice), the link types of the originating work item will be used.
Resource Assignment
You can set a unique resource attribute, which is used to assign resources to tasks.

To learn more about resource assignment, see Resources Configuration.
Max Units
You can configure unique maximum unit settings to customize how resources are allocated for tasks.

To learn more about Max Units, see Resources Configuration
Item Behavior
Item Behavior allows you to specify the type of item a work item will be displayed as within your Gantt chart.

You can choose from the following options:
Default Configuration - If this option is selected (default), work items matching the slice criteria will be displayed based on the default configuration.
Group - This will display matching work items as groups, containing all their child work items.
Milestone - This will convert matching work items into milestones and place them in the chart at their Due Dates. Note: The Due Date will be calculated automatically, unless one is manually set.
Task - This will display matching work items as task bars. This can be useful if you have selected Grouping for your general configuration and want to display specific parent work items as task bars instead of groups - for example, you may want to display Epics as task bars, but Stories with child work items as groups.
Do Not Show - This will remove the work items from your Gantt chart.