@AEMLearner-1989 - Check this you will have an idea about sling exporter after going through -
@manisha594391 - @Saravanan_Dharmaraj is right if you just need single instance instead of multiple once...but if you need to reviewer approve/reject in one shot (notification) with single WF instance definitely customize wf process step is needed...
@manisha594391 -Multi Resource Support only for AEM Page as per below reference
We can customize workflow process to enable Directory Level(Say for eg- Category-1...
@RooRue - You can narrow query based on path/template
hopes help you.
@avvidya931 - Check the AEM Run Mode to determine its author/publish...
Preview is custom made run mode on top of publish server.