In order to "Edit" the counter:
Go to the "Counters".
Select the counter that requires to edit.
Click on "Edit" as shown below,
4. Confirm by selecting "Ok" after the editing is complete.
In order to "Delete" the counter:
Go to the "Counters".
Select the counter that requires to Delete.
Click on "Delete" as shown below,
4. Click "Yes, Delete it!" to confirm.