Create two tasks initially:

app-excerpt.ts

//========================
// Populate list_of_tasks:
//========================
all_tasks.append(
  new TaskAction("Task 1", false, {
    add: channel_add,
    delete: channel_delete,
    check: channel_checked,
  })
);
all_tasks.append(
  new TaskAction("Task 2", true, {
    add: channel_add,
    delete: channel_delete,
    check: channel_checked,
  })
);