How to add ik_foot_l and ik_foot_r bones to skeleton?

Development Character & Animation
1

I noticed in example project, there are these three bones, and I need to use them for speed wraping. How can I add them when creating new characters? Are these created in Maya/Max, if so, how can I create them?

Snipaste_20200331_174706.png

Thanks

2

your file:MayaTools\General\ART\Projects\Sample\ExportFiles
created in Maya