updated the snapshotless squad section with another required step

docs/integrators/snapshotless-observing-squad.md

@@ -24,10 +24,33 @@ The nodes started with the flag `--operation-mode snapshotless-observer` will no
 
 ### Creating a Snapshotless Observing Squad from scratch
 
-If you choose to install a snapshotless observing squad from scratch, you should follow the instruction from the [observing squad section](/integrators/observing-squad) and remember to add in the `variables.cfg` file the operation mode in the node's extra flags definition:
+If you choose to install a snapshotless observing squad from scratch, you should follow the instruction from the [observing squad section](/integrators/observing-squad) and remember to do the following updates:
+* add in the `variables.cfg` file the operation mode in the node's extra flags definition:
 ```
 NODE_EXTRA_FLAGS="-log-save -operation-mode snapshotless-observer"
 ```
+* update the proxy config created by the scripts(found at `$CUSTOM_HOME/elrond-proxy/config/config.toml`). `IsSnapshotless = true` should be added to each observer, as follows:
+```toml
+[[Observers]]
+    ShardId = 0
+    Address = "http://127.0.0.1:8080"
+    IsSnapshotless = true
+
+[[Observers]]
+    ShardId = 1
+    Address = "http://127.0.0.1:8081"
+    IsSnapshotless = true
+
+[[Observers]]
+    ShardId = 2
+    Address = "http://127.0.0.1:8082"
+    IsSnapshotless = true
+
+[[Observers]]
+    ShardId = 4294967295
+    Address = "http://127.0.0.1:8083"
+    IsSnapshotless = true
+```
 
 After that, you can resume the normal Observing Squad installation steps.