Update rollup.md

packages/noco-docs/content/en/setup-and-usages/rollup.md

@@ -6,5 +6,62 @@ category: 'Usage'
 menuTitle: 'Rollup'
 ---
 
+## Rollup
+
+
+Sample simple Organization structure:
+- 5 verticals, each vertical has a team name & associated team code
+- 5 employees working at different verticals
+- Vertical **has many** Employees : relationship has been defined
+
+![LookUp](https://user-images.githubusercontent.com/86527202/144038845-402d5401-a214-4166-bc07-fcf8dcc8a961.png)
+
+### RollUp AGGREGATION functions supported
+- Count
+- Minimum
+- Maximum
+- Average
+- Sum
+- Count Distinct
+- Sum Distrinct
+- Average Distinct
+
+Now, we can explore how to extract employee count information per vertical using **"ROLLUP"** columns
+
+#### 1. Add new column
+Click on '+' icon to the left of column headers in Verticals table  
+
+![1](https://user-images.githubusercontent.com/86527202/144236273-484edc5b-7f5f-4041-b480-db08d4459d07.png)  
+  
+#### 2. Feed column name  
+
+![2](https://user-images.githubusercontent.com/86527202/144236279-41904955-4990-4a23-bec6-b0953002eac6.png)  
+
+#### 3. Select Column type as 'Rollup'  
+
+![3](https://user-images.githubusercontent.com/86527202/144236283-4596e3e1-3bf8-488f-bc9b-8ec1466a35c6.png)  
+  
+#### 4. Choose Child Table  
+Table Employee in our example  
+
+![4](https://user-images.githubusercontent.com/86527202/144236284-301178d8-f452-4d1e-9dff-80dd9570c280.png)  
+  
+#### 5. Choose on ​Child column  
+Pick appropriate column for aggreagation  
+
+![5](https://user-images.githubusercontent.com/86527202/144236286-28547d74-feb8-4ad8-a872-7ba809e5db1e.png)  
+  
+#### 6. Select ​Aggregate function
+Aggregate function will be "count" in our case  
+
+![6](https://user-images.githubusercontent.com/86527202/144236288-34a567d5-a5e9-4a1e-b074-5ea633e799a3.png)  
+  
+#### 7. Click on Save  
+
+![7](https://user-images.githubusercontent.com/86527202/144236289-5872529a-ba47-428d-979e-fdefb92a1039.png)  
+  
+#### 8. Column TeamCount is populated with appropriate information  
+  
+![8](https://user-images.githubusercontent.com/86527202/144236291-52855f92-ad8b-4be1-aa98-b5cfdb1ee108.png)
+
 
-> Todo