SheetSet Selection Popup

Many types of tasks will have a View/SheetSet Selection pop-up dialog:

Once selected you'll see this dialog:

There are two tabs:

On the "View Expression" tab, you can build a dynamic sheet set based on finding views/sheets that match the parameter values you specify. These can be straightforward, or use View Expression syntax for wildcards, etc.
On the View/ViewSheet Selection tab, if you have exported data via the Revit DB Export task, you'll be able to pick from the models, and then choose from a list of existing sheet sets in the model.