Process art | Tate https://www.tate.org.uk/art/art-terms/p/process-art
Tate glossary definition for process art: Art in which the process of its making is not hidden but remains a prominent aspect of the completed work, so that a part or even the whole of its subject is the making of the work
widespread preoccupation of artists in the late 1960s and the 1970s, but like so much else