To add the observation parameter, go to CBSE Examination > Observation Parameter.
Now on the left side you can see the input field for add the parameter, simply fill the name of the parameter and click on save button, parameter name will be displayed on the right side.
To edit the parameter name, just click on pencil icon showing at the action column and update the parameter name then click on save button, parameter name will be update successfully.
To delete the parameter, just click on cross icon showing at the action column, delete confirmation model will be open.
Simply click on the OK button, parameter name will be deleted successfully.