Hi Aparna
Probably the reason this has been left unanswered is your use case filters are not too clear.
Let me try and understand this a bit better:
1. You have an object that contains PDF’s (How is this configured by lookup or Master Child or stand alone? - by ParentId/ AccountId/UserID?)
2. You have an additional object with pictures? ((How is this configured by lookup or Master Child or stand alone? - by ParentId/ AccountId/UserID?)
What you need to do is look at the relationship between the objects and the data within. i.e. How can I show one picture and have it show another image that it is related to and by what relationship?
This you can do in a queue and use the ‘on click action’ (in the queue) to activate a model filter and refresh the model to show the related records. This is just 1 way of many possibilities. Let me know and I will help you further.