docs: include hierarchical processor

docs/modules/models.rst

@@ -13,3 +13,26 @@ encoder, processor, and decoder.
    :members:
    :no-undoc-members:
    :show-inheritance:
+
+
+**********************************************
+ Encoder Hierarchical processor Decoder Model
+**********************************************
+
+This model extends the standard encoder-processor-decoder architecture by introducing a **hierarchical processor**.
+
+Compared to the AnemoiModelEncProcDec model, this architecture requires a predefined list of 
+hidden nodes, `[hidden_1, ..., hidden_n]`. These nodes must be sorted to match the expected 
+flow of information `data -> hidden_1 -> ... -> hidden_n -> ... -> hidden_1 -> data`.
+
+A new argument is added to the configuration file: `enable_hierarchical_level_processing`. This argument determines
+whether a processor is added at each hierarchy level or only at the final level.
+
+By default, the number of channels for the mappers is defined as `2^n * config.num_channels`, where `n` represents the
+hierarchy level. This scaling ensures that the processing capacity grows proportionally with the depth of the 
+hierarchy, enabling efficient handling of data.
+
+.. automodule:: anemoi.models.models.hierarchical
+   :members:
+   :no-undoc-members:
+   :show-inheritance: