11
It should be possible to modify the Close opportunity form. The same way it is possible in April19 release to modify the close case form : https://docs.microsoft.com/en-us/business-applications-release-notes/April19/service/dynamics365-customer-service/case-management-case-resolution-extensibility
STATUS DETAILS
Completed
Bharath Varadarajan (administrator) on 8/31/2020 4:02:46 PM
Thank you for your feedback!
It is now possible to customize the close opportunity dialog. Check out Customize the Opportunity Close form.
Sincerely,
Bharath Varadarajan
Product Manager, Dynamics 365 Sales