Since version 3.2.0, all the Rigify panels have been grouped into one Rigify panel with sub-panels:

[![enter image description here][1]][1]



| Blender ≤ 3.1.0 | Blender ≥ 3.2.0 |
|--|--|
|Rigify buttons in object (pose) mode | Rigify |
|Rigify buttons in edit mode | Rigify → Samples |
|Rigify Bone Groups | Rigify → Bone Groups |
|Rigify Layer Names | Rigify → Layer Names |
|Rigify (advanced button) | Rigify → Advanced  |


  [1]: https://i.sstatic.net/jeTPG.png