Renting timeshare in the middle of the week

I would like to know if it is possible to rent a timeshare in the middle of the week. E.g Wednesday to Tuesday. I am looking for the 13 nights rental in October. Thank you, Hanna

If you rent from someone within a points system then this is possible .... if you rent from a week's owner then that is weekend to weekend, period.

How do I recognize the difference, in the system? Just by trying and sending questions to the owners?