It is easy to add additional subitems to existing subitem templates, as well as to delete subitems that are no longer necessary. To do this, simply access the app through the Updates section of a main task item in your board.
Step 1: Click on the dropdown menu Select a Template to choose the template you would like to add or delete subitems from:
Step 2: Once the specific template is open, click Edit Template:
Step 3: You can then delete subitems by selecting the trash icon next to the existing subitems, or, you can add subitems by entering the subitem text and then clicking add:
Step 4: Select Save Template to save changes.
Important Note: Revising an existing subitem template by deleting or adding new subitems will not change subitem templates that have already been added to main tasks, but instead will only reflect those changes in future uses of the subitem templates.