Users getting an error when running Create accounting in Assets

Users getting an error when running Create accounting in Assets

"The accounting date 30-NOV-18 isn't in an open or a future enterable period. Details: You must open the accounting period or modify the journal entry rule set or the source value to use a different accounting date."

The users do not want to open the old periods and they want me to update the "Journal entry Rule" but I cannot see that you can change the dates in the Rules?

Is this possible>

I have not been able to find any documents showing how to do this?