Place your cursor over Reference Data and left click on the sub-option Jobs.
To navigate between pages of the table you can either use the 
button or use the drop down list 
to choose the page you would like to view.
Find the job that you would like to delete and left click on the Delete button 
on that line.
A dialog box will appear for you to choose either 
to delete the job or 
to not delete.
If the item you are trying to delete is associated with any of the data in the database IQSweb will not allow you to delete the data.