Understanding Background Workers with Redis, Sidekiq, Heroku and Rails 5

I have a Rails 5 app where I'm starting to move various jobs to the background using Sidekiq, Heroku and Redis.

So far I have ResetFinanceDataWorker which has a Class of the same name.

//reset_finance_data_worker.rb

class ResetFinanceDataWorker
  include Sidekiq::Worker
  sidekiq_options retry: false

  def perform()
  end
end

I can call this by calling ResetFinanceDataWorker.perform_in(10.seconds). Ideally, I would like to have several workers in one file, like this:

//finance_worker.rb

class AnotherWorker
  include Sidekiq::Worker
  sidekiq_options retry: false

  def perform()
  end
end

class ResetFinanceDataWorker
  include Sidekiq::Worker
  sidekiq_options retry: false

  def perform()
  end
end

And being able to call FinanceWorker.AnotherWorker.perform_in(10.seconds). However, this is not possible.

Can someone explain me 1) How would I make that work? and 2) Best practices around organising worker files.

Thanks.