There are some job functions that are critical to your operation that you want to include on your labor schedule each week, but that you are not actively hiring for. An example of this might be a Manager or Supervisor position. For these positions, mark them as "Private" once you create the position in Forge.
For positions marked as "Public," other business owners and operators in your area will be able to see just the "Position Name" in their "Share Talent" portal. If that nearby business owner or operator feels they have a similar job position at their location, they may ask to "Share Talent" with you.