Help with ActiveStorage & Associations

I have created a direct upload form and that works great. The pdfs get uploaded and added to activestorage. however, I now wish to create another record which relates to only one of the uploaded files. (so a company sends in many pdfs with jobs, i want to create a workorder for a workman with just one of the jobs)

class Jobqueue < ApplicationRecord
        has_many_attached :attachments
        has_many :workorders;
end
class Workorder < ApplicationRecord
        belongs_to :Jobqueue, :company, :workman
        has_attached :attachment
end

In the create method of the Jobqueue, i was thinking of replicating the record that’s in the active_record_attachments table, and substituting the Jobqueue record type for Workorder using sql, but it doesn’t seem the railsy way to do it
Any help most welcome