Similar to how a piece of master data, like a G/L Account, can have many default dimensions assigned at one time. On a general journal for instance where you have missing dimension values it would be a nice feature to grab many lines and have the ability to set the same dimension values for the shortcut dimensions and others. This would remove the need to do it on a line by line basis or to use "edit in excel" or copy/paste. The page that pops up could be similar to that of the default dimension assigning page.