I'm new to Power Apps so I need some assistance with a task that may be very simple. I have created a form for a SharePoint list that includes a DataTable that is populated with items from a second SharePoint list. I would like to add a button that can be used to add items to the second SharePoint list. The form looks something like this:

The lower part of the form is the DataTable that is populated with items from the second SharePoint list. I would like the "Add Item" button to open up a form for creating a new item in the second SharePoint list.
I assume that the correct place to add the code is the OnSelect field in the ACTION section for the button. I'm just getting stuck finding the correct code.
Thanks for your help!
