attempting bar code correct count coupon customer discount field limit limited maximum number placed putting subject times total

I placed '1' in the maximum use count. Does this number in the maximum use count field limit each customer to only one use of this coupon/discount?

No, that's the "total" number of times a discount code could be used.

I thought that if you put the number "1" in the maximum use count it will bar anyone attempting from using the discount more than one time? You said below "...that's the "total" number of times a discount code code be used." Therefore by putting "1" into this field any given customer would be limited to using the subject discount only once. Right?

Yes, that is correct.