You can do this directly on the Meta Ads Editor upload screen.

New campaign: select the account and click Create new campaign. The campaign wizard opens (objective, budget, audience), and you can create up to 10 campaigns at once, with numbered names. All of them are created paused.

New ad set: select the campaign (or several) and click Create new ad set. You choose:

  1. Duplicate an ad set from this campaign (the screen shows which ad set is the source and lets you change it), or
  2. Create from scratch and build the audience right there (Advantage+, location, age, interests, custom audiences).

With several campaigns selected, it creates the ad set in all of them. On a CBO campaign it doesn't ask for a budget (the campaign controls the amount). The review step shows the names and budget before creating, and everything is created paused. If no campaign is selected, the wizard creates the campaign along with the ad sets.