Updated config section
Change-Id: I445f2b222a7be3a6153438600eeebe727846e645
diff --git a/configuration/config.rst b/configuration/config.rst
index 6d9c11e..2189179 100644
--- a/configuration/config.rst
+++ b/configuration/config.rst
@@ -1,10 +1,47 @@
Overview
---------
-Network Slice Configuration
----------------------------
+========
-Device Group Configuration
---------------------------
+Reference helm chart
+--------------------
-UE Provisioning
----------------
+ - `SD-Core Helm Chart Repository <https://gerrit.opencord.org/admin/repos/sdcore-helm-charts>`_
+
+Configuration Methods
+---------------------
+SD-Core supports 2 ways to configure network functions and micro services.
+
+ - Helm Chart
+
+ - Each individual network function and microservice has its own helm chart.
+ - User needs to provide override values and deploy the network functions as per their need.
+
+ - REST Config Interface
+
+ - Basic static configuration is passed through helm chart
+ - Dynamic slice creation APIs are provided through REST interface.
+ - REST APIs are defined to create/modify/delete network slice.
+ - REST APIs are also provided to provision subscribers and grouping the subscribers under device Group.
+
+Configuration
+-------------
+
+ - Network Slice Configuration
+
+ - Configuration to create a slice of network
+ - Slice contains the QoS configuration
+ - Group of devices assigned to network slice
+ - Site configuration including UPF, eNBs/gNB assigned to the slice
+
+ - Device Group Configuration
+
+ - Configuration of group of UEs
+ - QoS required for the device group
+ - IP domain configuration for the group of devices
+
+ - UE Provisioning
+
+ - Configuration of IMSI and its security keys configuration
+
+Sample Configuration
+--------------------
+