Use "filling in for" in a sentence

1. Unlike the earlier pieces, however, which sat directly on the floor, the Androgyn torsos are perched on low stretchers of wooden logs, the long poles filling in for lost legs

2. Elbe started dressing in women's clothes after filling in for Gottlieb's absentee model; she was asked to wear stockings and heels so her legs could substitute for those of the model.