Modes-and-Variables.md

+## ID_TOKENS
+
+id tokens will be necessary with gitlab >= 16.5
+For the driver to work with newer gitlab versions the id tokens need to be defined as follows:
+```
+id_tokens:
+  HPC_CI_TOKEN:
+    aud: aixCIlenz
+```
+Both the name `HPC_CI_TOKEN` and the audience `aud:aixCIlenz` required by the driver.
+
 ## Modes
 
 The custom runner allows the use of different modes to support a variety of use cases.