To clarify, when I go to search, i want to be able to chose different metadata based on the library I am searching in.
Also when I submit file, i want to be able to see different metadata fields based on the library where I am submitting the file.
Can I do this with Dspace? I know I can change some cfg files to edit metadata, but can i do it library depended. I have searched for an answer but couldn't find anything useful, so any link would be highly appreciated. Tnx
edit: Sorry for the mistake, what I meant to ask is can I use different metadata for each Community in Dspace.
For submit forms
You can declare different forms and map them with collections in the submit form configuration. See documentation for the details. This refers to this file in the source.
For search filters
Similarly to the XML configuration for submit forms above, the search module, Discovery, can attach a different setup to each individual collection. See documentation for all config possibilities. The mapping of a given config with a collection can be made in this section of the config file, and configuring the list of filters or sidebar facets in a given config is similar to this section. Note that each filter / facet refers to a dedicated bean configuration that defines its behaviour, e.g. here for authors.
You'll probably need to experiment a bit before getting to exactly what you need, but unless I missed something, everything you're trying to do is doable via those files and — relatively — simple config.
Good luck !