Can we introduce an absence of less one day during several days with SAP?

Hi,

is possible to create in SAP an absence of less one day during several days??...

I want to introduce an absence of 1 hour,for example,but I want this absence during one week.How can I do it??.........I´ve tried to do it using the PA61 and the PA71 but the system doesn´t let me.I´ve introduced:

from 01.07.2007 to 04.07.2007,an absence of 1 hour.When I press enter SAP insert 32 hours (8 per hour).

How can I solve this?,is it possible??....Thanks in advance!!!