Unfortunately, it is not possible to bulk upload documents in the Policies & Procedures area
Each individual document must be given a name, description and have its applicability to your locations specified. Additionally, each document should ideally have two versions uploaded - one that your users can read and another that the document owner can edit at the review intervals you've set up. As such, it would not be practical to have this in a bulk upload format.
If you have a lot of documents that you'd like to add, we'd suggest adding a few at a time as and when the time to review approaches.