Attestation of requests

We are going to start using attestation, and to begin with, we would like to only attest requests, and only make the manager approve/deny. Looking at the predefined attestation procedures, you have to choose system roles, entitlements, business roles, aeroles etc. We can, of course, make several attestation policies and runs for each type of role and entitlemens, and make conditions for only requests, but is there a better way, for example making an attestation procedure with a table that consists of all types of objects that may be connected to a service item and can be requested?