Popup Form that notified a customer when specific product/service is available

Hi there,

I am have a marketplace where people can book a service with different professional. However not every professional is available all the time. When they are not available I switch to the different button that says coming soon. WHat I want is that when someone click the button it gives them a popup model form to leave their email so I can notify them when the pro is avaible.

I know how to build the model etc but need help to make it dynamic. So if the person is on Professional 3 and they leave their email they go in the list of emails for professional 3 vs someone who click on professional 2 etc etc. The list of professionals are different items in the CMS.

Is there a way to do this so I can retain spefic information depending on where they click this option ?

Thanks in advance

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