@mayamis1703eq You can achieve this by building a plugin which can inject a script in certification xhtml page to show a popup based on your requirement like only for certain apps or certain ents or roles.
Can refer to SailPoint’s documentation on creating and writing plugins for how to set the plugin up
Biggest things to note
scope plugin to only run on your url routes (i.e. certification page)
you will need to handle the “specific certification item for specific application” case. Would recommend grabbing the certification item and checking the application it’s referencing or can use certification tags to scope when this behavior occurs
@mayamis1703eq Could you please explain your usecase in detail? You already have approve and revoke in Certification page, so you need another popup for approvals? Do you want to capture any message in the popup? Then you can make comments mandatory for approvals.
Or the popup will have some other information? Please specify. This will allow us to help you better.