In Marg ERP software if with the calculation, software also shows margin and user needs to disable it then this can be done easily: 

In order to disable margin, the user needs to follow the given steps:

• Go to Masters > Marg Setups > Control Room.

• A 'Control Room' window will appear.

• The user will select ‘Search in All’. 

• A 'Controls' window will appear in which the user will Search 'Bill wise Margin'.

• Now click on ‘Accept’.

• A 'Bill wise margin' window will appear.

• In ‘Show Bill wise Margin on % [Y] / Rs / Both / No’ option, the user will select 'N'.

• The user will now press 'ESC' key twice .

• Click on ‘Yes’ to Save changes.

After following the above steps, the margin will get disabled from the Billing window.