Update workflow docs to include instructions on running cli

docs/workflows/README.MD

@@ -1,4 +1,49 @@
-## Workflows
+# Workflows
 The repository will handle multiple workflows and backends, some of which have specific requirements.
 
-- [pyroSAR + GAMMA](pyrosar_gamma.md)
+## Workflows
+- pyroSAR + GAMMA
+    - [Requirements](pyrosar_gamma.md)
+
+## Command line interface
+> **_NOTE:_**  At this time, pyroSAR + GAMMA is the only workflow, and the command line interfaces have not yet been generalised to other workflows.
+
+The package has a number of useful command line interfaces:
+
+### Finding the location of a scene on the NCI
+The `find-scene` command will display the location of a given scene on the NCI.
+The full path to the scene is required as the input to other commands.
+
+Example usage:
+```
+$ find-scene S1A_EW_GRDM_1SDH_20240129T091735_20240129T091828_052319_065379_0F1E
+
+/path/to/scene/S1A_EW_GRDM_1SDH_20240129T091735_20240129T091828_052319_065379_0F1E.zip
+```
+
+### Submit a workflow
+This will submit a job request to the NCI based on the job parameters and file paths in the supplied config. 
+The [default config](../../sar_antarctica/nci/configs/default.toml) will be used if no other config is provided.
+
+Example usage
+```
+$ submit-pyrosar-gamma-workflow /path/to/scene/S1A_EW_GRDM_1SDH_20240129T091735_20240129T091828_052319_065379_0F1E.zip
+```
+This will submit a job to the NCI with the default config.
+To use a different config, run the command and supply the `--config` option
+```
+--config /path/to/config.toml
+```
+
+### Run a workflow interactively
+If you are still testing a workflow, it is best to run it in an interactive session.
+While in an interactive session, you can run the workflow directly. 
+
+Example usage
+```
+$ run-pyrosar-gamma-workflow /path/to/scene/S1A_EW_GRDM_1SDH_20240129T091735_20240129T091828_052319_065379_0F1E.zip
+```
+To use a different config, run the command and supply the `--config` option
+```
+--config /path/to/config.toml
+```