Set up the index for a feature - Oracle Search

Hi Team,

Can somebody explain in detail about this step.
When to run this Process and which Parameter is appropriate to select?

Oracle says "If you need to set up the index for a feature, select the relevant parameter value. For example, fa-hcm-person for person search or fa-hcm-position for positions search. If you’re setting up multiple indexes, then you need to run multiple processes with different index name parameters."

Oracle Reference Link https://www.oracle.com/pls/topic/lookup?ctx=fa-latest&id=u30254830

Regards,

Mastan