Hi @tczerwinskiD78JE. It sounds like you would first need to design & create the custom form you want. Then create an iLogic rule that will launch that form. Then set that rule to run every time the document is saved, but catch it just before it saves. All that sounds doable. There are a few options when it comes to forms. There are local and external iLogic forms (local ones are saved within an Inventor document), then there are VBA UserForms, then there are regular Windows Forms that you might create using vb.net within something like Visual Studio. If you are wanting to keep things as simple as possible, then you will probably want to stick with iLogic forms to start with. They are the simplest and quickest to create, but offer less design options and functionality in the balance. You can get started creating one by first ensuring that your iLogic browser is visible along the side of your modeling screen. Then click on either the 'Forms' or 'Global Forms' sub group within the iLogic browser window. Then right-click within the open area of that window and choose 'Add Form'. That will bring up the Form Editor dialog.
Here is a link that should get you pointed in the right direction:
About Rules and Forms in iLogic
To Work with Forms
Form Editor Reference
Wesley Crihfield

(Not an Autodesk Employee)