I would like to check my understanding of multilevel models generated by brms for the case of the multinomial family and would appreciate any comments.

Suppose there are three categories: `a`

, `b`

, and `c`

. Suppose also there is one grouping factor: `age`

. The formula is as follows:

```
y | trials(total) ~ (1 | age)
```

where `y`

binds counts for `a`

, `b`

, and `c`

(in that order), and `total`

is the total number of trials for the corresponding observations.

Would the following be a correct summary of the model being generated?