Place your cursor over Reference Data and left click on the sub-option Job Currency.
A screen will appear with the top portion being display only of the jobs available in the IQS database accessed by a drop-down list.
At the bottom of the screen you will see "Jobs that maintain currency for selected job". That is where you will add, edit, and delete information.
Select the job that you would like to delete job currency by left clicking on the Drop-down list button 
. Scroll down the list and left click on the job you would like to delete currency.
Find the job that you would like to delete under the heading "Jobs that maintain currency for selected jobs".
Left click on the Delete button 
on that line.
A dialog box will appear for you to choose either 
to delete the job currency 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.