How to add a new block environment / layouts (definitions, theorem, etc) to RMarkdown beamer?

Question

I am trying to add insets (definitions, theorem, etc) to RMarkdown beamer. Does anyone know how to do this?

An example would be a definition:

\begin_layout Definition
\begin_inset Quotes eld
\end_inset

[Cheese] cheese rocks. 
\begin_inset Quotes erd
\end_inset

Answer 1

You can use a header level inferior to the slide level. Here is an example (which may look a little bit different with another beamer theme).

---
output: 
  beamer_presentation:
    theme: Copenhagen
    slide_level: 3
---

### Revenue management

#### Definition

Cheese rocks^[especially French cheese]