Enabling Transaction level search

Peoplesoft 9.2, image 46

1) We have enabled elastic search/Global search. Now requirement is to enable transaction level search for example- if user enters Po_id/invoice or req_id all the related content should display.

Do we have any step-by-step document for the same.

Somehow I have enabled for PO and Requisition, but i am facing issue while enabling for vouchers.

2) Will there be any performance related issue after enabling transaction level search

3) Can we enable transaction level search for all the modules or we need to enable search for one module at a time.

4) How often we need to run the full/incremental index post enabling transaction level search.