Let me share how it works in QuickBooks Online, Nannap-investmen.
The To-do list automatically changes as you go through payroll. It'll help you know what to do next. We're unable to add shortcuts. You can only add your reminders.
I'll include this reference to help you learn more about the feature: Manage Your To Do list.
If there's anything else that you need, feel free to let us know. We're available 24/7 to help you. Take care!