I need to add additional metadata to the advanced search in DSpace 9.1. Is this possible?
For example, how do I insert item type (dc.type) and abstract (dc.description.abstract) filters into the metadata list for advanced search filters? (see image below)

I noticed that the default "Item Type" in DSpace 9.1 filters by the dspace.entity.type metadata (Example:
https://sandbox.dspace.org/search?query=&spc.page=1&f.entityType=Publication,contains).
I use the dc.type metadata to save the item type, not dspace.entity.type. How do I change this so that the "Item Type" filters by dc.type?
Aroldo