Update lookup.md

Lookup with custom example (Team, employee)

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

@@ -6,5 +6,39 @@ category: 'Usage'
 menuTitle: 'Lookup'
 ---
 
+## Lookup  
+
+
+#### 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
+
+<img src="https://user-images.githubusercontent.com/86527202/144038845-402d5401-a214-4166-bc07-fcf8dcc8a961.png" width="125%"/>
+
+Now, we can explore how to extract team-code information in Employee table using **"LOOKUP"** columns
+
+#### 1. Add new column  
+<img src="https://user-images.githubusercontent.com/86527202/144230901-11dc69e7-3e4d-481d-b682-b7d73e6352c0.png" width="50%"/>
+Click on '+' icon to the left of column headers in Employee table
+
+#### 2. Feed Column name  
+<img src="https://user-images.githubusercontent.com/86527202/144230954-40646872-4a05-45fd-9a4f-52b8b00a3a7d.png" width="75%"/>
+
+#### 3. Select Column type as 'Lookup'  
+<img src="https://user-images.githubusercontent.com/86527202/144230982-37d08274-ce63-4a28-a30a-bd6b41c3b489.png" width="75%"/>
+
+#### 4. Choose Child Table  
+Table Verticals in our example  
+<img src="https://user-images.githubusercontent.com/86527202/144231016-b277270d-62e4-4607-9aaa-b253621808a0.png" width="50%"/>
+
+#### 5. Select Child Column
+<img src="https://user-images.githubusercontent.com/86527202/144231774-2bdd9988-d3f8-4933-96c6-5b710d645905.png" width="50%"/>
+
+#### 6. Click on Save
+<img src="https://user-images.githubusercontent.com/86527202/144231320-9e8b3465-a9a4-4cf7-a9fe-65d47ab8b96c.png" width="50%"/>
+
+#### 7. Required information is populated in the newly created column
+<img src="https://user-images.githubusercontent.com/86527202/144231230-0e013684-b11c-4dce-bacf-9feee5546f26.png" width="75%"/>
+
 
-> Todo