The fixed jammer(s) (jib fairleads) at the front of the foredeck is for the jib sheets.
The sliding fairleads are for the Genoa sheets.
Many have moved them inboard to the wooden benches as it aids pointing higher as the sail can be moved further inboard.
Cruisers tend to leave then on the side deck.
Not sure what the previous owner had in mind for the other fairlead and cleat on the side deck unless it was part of the spinnaker controls.