Multiple allocations

docs/feature-flagging/experiment-assignment.md

@@ -20,6 +20,10 @@ Click "Create Experiment" on the experiment allocation to create an experiment.
 
 ![Randomization 1](/img/feature-flagging/randomization-1.png)
 
+Each allocation (feature gate or experiment) can target one subset of subjects thanks to rules. Subjects for whom the first rule don’t apply are passed on to the next allocation on the flag. Thanks to this, multiple experiments can be run on the same flag, targetting distinct users.
+
+![Multiple allocations](/img/feature-flagging/multiple_allocations.png)
+
 Once assignments have begun, they will need to be logged to your data warehouse to be analyzed by Eppo. All SDKs take in a callback function that is called with the assignment parameters (`subject_id`, `experiment_id`, `timestamp`, etc.) passed in when assignments are made. That function is completely managed by you - the only requirement is that the assignment data eventually makes it to your warehouse. 
 
 Congratulations on setting up your first Eppo randomized experiment! Refer to our [analysis setup guide](/experiment-quickstart) to connect Eppo to your data warehouse and easily analyze the results.