how to add screening services to a already approved requisition

Summary:

Content (please ensure you mask any confidential information):

Hello,

we have tied up with the 3rd party to have assessment packages which we usually tag them in the requisition while creating them under screening services.

However there are certain times where the recruiter has missed to add the assessment while creating the requisition , now that the requisition is active and open we are unable to attach the assessment or even share it with candidates.

Can anyone help on how we can do this ? where we can add screening services after the req is approved ?

Version (include the version you are using, if applicable):