In order to modify Sale Bill on Control Room window in Marg Software , the user needs to follow the below steps:

• On 'Control Room' window user will press 'Ctrl+F3'.

• A 'Modify' window will appear in which user will select the options as per the Requirement no, bill date etc. Press 'Page Down' key.

• The 'Sale As On' window will appear.

• Press 'Enter' key on selected entry.

• Now, Click on 'Modify'.

• Then user has to make changes as per the requirement eg:- party name, quantity, type, date, etc.

• Suppose user need to change the quantity.

• Then press 'Ctrl+W' for save.

• A 'Save Changes' Window will appear. Select ‘Yes’ to save the changes.