Update the TOC, as requested . . .

Author: fbsolo-ms1

articles/machine-learning/toc.yml

@@ -408,21 +408,14 @@
         - name: Create datastores
           displayName: Create datastores
           href: how-to-datastore.md
-        - name: Create data assets
-          displayName: Create data assets
-          href: how-to-create-data-assets.md
-        - name: Read & write data in jobs
-          displayName: Read & write data in jobs
-          href: how-to-read-write-data-v2.md
-        - name: Submit Spark jobs in Azure Machine Learning
-          displayName: Submit Spark jobs in Azure Machine Learning
-          href: how-to-submit-spark-jobs.md
-        - name: Interactive Data Wrangling with Apache Spark
-          displayName: Interactive Data Wrangling with Apache Spark
-          href: interactive-data-wrangling-with-apache-spark-azure-ml.md
-        - name: Data administration
-          displayName: Data administration
-          href: how-to-administrate-data-authentication.md
+        - name: Access and explore your data
+          items:
+            - name: Access data during interactive development
+              displayName: Access data during interactive development
+              href: how-to-access-data-interactive.md
+            - name: Access data in jobs
+              displayName: Access data in jobs
+              href: how-to-read-write-data-v2.md
         - name: Label data
           items:
             - name: Set up image labeling
@@ -439,6 +432,22 @@
               href: how-to-add-users.md
             - name: Outsource labeling tasks
               href: how-to-outsource-data-labeling.md
+        - name: Prepare data with Apache Spark
+          items:
+            - name: Submit Spark jobs in Azure Machine Learning
+              displayName: Submit Spark jobs in Azure Machine Learning
+              href: how-to-submit-spark-jobs.md
+            - name: Interactive Data Wrangling with Apache Spark
+              displayName: Interactive Data Wrangling with Apache Spark
+              href: interactive-data-wrangling-with-apache-spark-azure-ml.md
+        - name: Share and Version Data
+          items:
+            - name: Create data assets
+              displayName: Create data assets
+              href: how-to-create-data-assets.md
+        - name: Data administration and authentication
+          displayName: Data administration and authentication
+          href: how-to-administrate-data-authentication.md
     - name: Train models
       items:
         - name: Train a model (SDK, CLI, REST)