Per workflow variant and release approval path, you determine as from which amount which release approval procedure is triggered and carried out. These procedures are referred to as "subworkflows" in workflow terms.
The standard system comes with subworkflows predefined as workflow templates for use as a reference for your own subworkflows. The first of these contains a single-level release, the second, a two-level release and the third, a three-level release. The single-level requires just one person to release the document. The two-level version supports dual control, whilst the three-level procedure allows for triple control of payment releases. Each subworkflow is triggered the first time parked documents are entered.
Assign the release approval procedure (subworkflow) that you require.