How to modify related assets saved search in redwood.

Summary:

We want to know how can we modify related assets saved search as it is showing only account related assets.

We have imported assets for both accounts and contacts . so we want related asset saved search for contact as well.

In opportunity object we have exposed asset picket to see/add related assets in opportunity. so when we are selecting Account , asset picker showing related assets to account, but when we select Contact, asset picker is not showing any related assets to that contact.

Please help to us to show related assets for contact as well in opportunity object.