There is a 'New_window' control in DeepSee Widget which opens the page in a new tab in a browser with a given URL.
With the help of this control you can open another dashboard and supply some parameters in SETTINGS clause.
Consider I can setup in Dash1 the URL like:
_DeepSee.UserPortal.DashboardViewer.zen?DASHBOARD=Postings.dashboard&SETTINGS=TARGET:W1;FILTER: [Author].[H1].[Author].%26[$$$VALUELIST] to filter the widget W1 in Postings dashboard with filter [Author].[H1].[Author].%26[$$$VALUELIST], where $$$VALUELIST is some value from the listing in a widget in Dash1.
How can I spread the filter for two or more widgets?