How to prevent duplicate names in Gantt chart?

[Kolumam]

I have the relationship between the two tables.

A single operation has multiple contracts. When I add the operation name to Gantt, it is creating duplicates.
I want a single operation name to contain all the start dates and end dates rather than multiple operation names like below. 

[v-juanli-msft]

Hi @Kolumam 

You could add "operation" column into "Parent" bucket, add "contracts" into "task" bucket.

When clicking on the "-" sign beside the "operation" items, it would show dates on "operation" level.

Best Regards
Maggie
Community Support Team _ Maggie Li
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