Allow users to create/edit a record in many table

I am re-asking a previously asked question after redesigning my database. I have requested the previous question be deleted. That question got really confusing...all because of my original database design. I have attached the pertinent portion of the new database. Hopefully, things are much simpler now.

This database is for users to forecast projected sales for certain products. The admin for the project will select which products they want users to forecast. This will create a record in tblForecastHeaders. Users will use a form having 2 subforms. They will select a product from a subform showing all records from tblForecastHeaders. The other subform will be used for the location to enter a value as a forecast for the selected product. The user may also come back and edit their forecasts.

Right now, I am creating a record for every user for every product. That just doesn't seem right. There will be many products that users don't want to create a forecast. How can I allow the user to create or edit a forecast without creating all of those records ahead of time.

Thanks, Dale
Forecast-demo.accdb
Dale LoganConsultantAsked:
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Scott McDaniel (Microsoft Access MVP - EE MVE )Connect With a Mentor Infotrakker SoftwareCommented:
So an Admin will decide which products are needed for forecasting, and then the user will select a Location, and all selected products related to that location will populate the leftside subform? And you then want the user to be able to selectively add a Forecast, based on their selections in the leftside subform?

The only viable way I could see to do this would be to add a button to allow the user to Create Forecast. The user would select a location, then a product, and then they would click a button to create a new Forecast for that location+product. Code could be used to determine if a forecast already exists, and if so then just show the user the current forecast.
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Dale LoganConsultantAuthor Commented:
Wow. Sometimes...no most of the time, I can make the most simple task to be difficult. A button to add a forecast will do the trick. That will cut down on the number of records by 70%. Thanks,.
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