Question on My Settings/Challenges

Hello, I don't quite understand how the Minimum Timeout filter works. Could someone please explain in further detail? Perhaps an example would be helpful. Thanks!

From the My Settings/Challenges page:
Minimum timeout: Set the minimum number of days for which you will accept challenges.

I have my minimum timeout set to 7 days. If someone tries to send me a challenge with less than a 7 day timeout it'll tell them that's what the problem is and not let them send me the game. Of course they also have to be between 1530 and 1560 and I must be below my 12 max game limit. Unless they are on my buddy list of course.