[Koha] managing staged marc records for upload through "tools"

Koha experts, In uploading marc records without holdings information to the reservoir and then importing them into the catalog, I can't seem to find where you would tell the system which location to upload the records to. How do you specify? Thanks -- Jeremy C. Shellhase Systems Librarian Humboldt State University Library Arcata, CA 95521 707-826-3144 (voice) 707-826-3440 (fax) jeremy.shellhase@humboldt edu