I select a check box for a field in order to have it moved to the values area
of my pivot table;
however the field is numeric, sometimes it is moved by default to the row
label area
(sometimes it is moved by default to the values area for the same pivot
table : I can not find what the trigger is)

how can I avoid this or how can I drag "in bulk" all fields from the row
label to the values area ?
thanks !