Can I elect to utilize only a portion of my NOL carryover from prior years even though turbotax is utilizing the entire amount?

I have a $5,000 NOL carryover and turbotax is utilizing the entire amount.  The return shows I owe $0.  If I change the NOL amount to $1,500, the return still shows I owe $0.  Can I elect to utilize only $1,500 and carry the remaining $3,500 forward?  If so, how can I do this?  Also, why is turbotax utilizing the entire $5,000 when there is no benefit to do so?