I want to set Incremental Crawl to night but don't finally understand how to do it.
If you want to crawl more frequently than once a day, select the Repeat within the day box and type the number of minutes to wait between crawls in the Every box and type the total number of minutes in which to repeat the crawl within the same day in the For box. For example, if you select Repeat within the day and type 60 in the Every box and 720 in the For box, an incremental crawl of the content source you are configuring starts every 60 minutes up to 720 minutes (12 hours) after the first scheduled incremental crawl for this content source ran. https://technet.microsoft.com/en-us/library/cc263373(v=office.12).aspx
But I don't understand it. I want to
Turn off full crawl(it is already indexed)
Set Incremental crawl to night - between by example 9 PM and 8 AM
How can I realize it with these options?