Currently when you want to set "Basic" properties from first tab of Database Properties by selecting multiple databases from Files tab, then it is not possible. Currently only Advanced Properties can be set for multiple databases like this.
So there is a feature request to allow this option for "Basic" Database proerties as well. There are some Basic properties like "Don't allow URL open" which needs to be set for multiple databases at a time.
This Enhancement Request is submitted for Domino 10 and Domino 11