Question

I've created a task list database with two fields: name (or description of the task) which is the primary key and a property Completed which is a checkbox. I would like to simulate the behavior of the ToDo list page, so that whenever you check the Completed field, the description of the task (primary key or Name property) becomes strike through.

I don't want to use the available toDo list because I don't know how to add a third field to it; for example the Date Created field of the task.

Answer 1

You can't modify natural Notion properties depending on other properties actions. You will need extra properties and formulas to achieve something similar.

For the created date, just create a new property and from the type selector, choose "created time". That will automatically add the date the task was created.