Subitems allow for Items to be broken up into smaller pieces, each contributing to the Parent Item. You can add them in the ‘Relations’ section within the Item modal. When you click to add a Subitem you’ll have the choice to choose an existing Item (search bar will help you find the one you want) or to create a new one (an empty card will appear just like when you’re creating a new Item from the Backlog). You can add as many Subitems as you need to.
If you’ve already created an Item that you want to turn into a Subitem, you can open it and in the ’Relations’ section click on the red ‘Add parent’ button. You’ll be asked to search for an Item where you want to add a Subitem.
You can also add a Blocking Item to any of your Items. This will prevent you from moving the Item across the Board unless the Blocking Item is moved beforehand.
To add a Blocking Item, click on Relations and then Add Blocking Item. Start typing the name of the Item you wish to define as a Blocking Item and choose it from a dropdown menu.