Parent and Child Card Relation

Card relations are time dependent connections. One of them is parent and child relation.

Child card is a subtask of the main task – parent card. It means that the parent card is superior to the child card. This pair of cards has a certain time principle: child card always must be started and completed in the “lifetime” of the parent card.

Cards can have complex relations. One card can have multiple parents and children at the same time. 

Cards in the parent and child relation are visualized with icons:

  • parent card
  • child card

Card relations are listed at the card view in the card details section.

card relations in card

Children of the card are shown also at the child card group.

Card relations are presented in different way depends on the board view. See some examples here.

The example above shows four child cards of the Solar power parent card. They are presented as a card detail in a List view.

Delete relation between parent and child card

Sometimes the task that was the child card at first may grow to an independent job. You can detach it from the parent card.

  1. Go to the parent card.
  2. Hover over the child card at child card group.
  3. Press more button (three dots).
  4. Select Detach.

The child card will become a separate simple card.

See how to make the same action with the mind map view.


You can observe parent and child card relations in the Gantt Chart view and Mind map view. There is also option to expand child cards in the Kanban view and List view.

Even if the card has more than one parent, only one of them is the default parent. The connection visible on the Mind Map view is that one between the child card and the default parent card.

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