I'm very new to Smartsheet and hoping someone can help me. I have created a checklist, with different categories divided up by parent rows, and the tasks listed as children under the categories. I have a checkbox column and each task (in the children rows) has a checkbox. I have figured out how to calculate the percentage of completed tasks in each category in the parent rows, but I would like to be able to calculate the overall percentage of completed tasks in a sheet summary field. Is this possible? I cannot find a formula that will calculate all of the children rows together. I have included a screenshot to demonstrate what I mean!