It sounds like you're trying to have a pop-up that comes up when certain conditions occur in Salesforce. Unfortunately, Flow cannot do either of these items. Trigger-ready flow cannot present any kind of screens at all; it is an inherent restriction of the system for which there is no workaround. It also cannot "open records" in edit mode or otherwise; the closest you could get is presenting a link for a user to click, but that would require the user to click a button or link first.
Alternatively, you could do this with some complex Visualforce and Javascript work. I'm not a developer, but theoretically, this could be done, though it would take a significant amount of code.