How to enable Opportunity Marketplace

Setup and Maintenance
Task Pane - Search
Manage Profile Options
Click on Add
Profile Option Code: ORA_HCM_OPP_MARKET_PLACE_JOBS
Profile Display Name: Enable Jobs on Opportunity Marketplace
Application: Recruiting
Module: Recruiting Opportunity Marketplace
Description: Enable Jobs for Opportunity Marketplace
Start Date: 01/01/1951

Setup and Maintenance
Task Pane - Search
Manage Administrator Profile Values
Profile Option Code: ORA_HCM_OPP_MARKET_PLACE_JOBS
Profile Level - Site: Yes

You can add the privileges to the role of your choice or create specific seeker roles as required
IRC_ACCESS_OPPORTUNITY_MARKETPLACE_PRIV 
PER_REST_SERVICE_ACCESS_WORKFORCE_STRUCTURE_LOVS_PRIV

Run the scheduled process called “ESS job to create index definition and perform initial ingest to OSCS”
Specify “fa-hcm- requisition” in the Index Name to Re-ingest field

I hope this blog post was helpful for you. If you have any questions or feedback, please leave a comment below.