Filter across modules

Requirements from where? DOOR/RDNG (Doors Next Generation).
I am considering for RDNG, you have two options "Filter by folder" and "Filter by attribute". so you can first apply filter on a particular folder having all the modules and then apply "Filter by Attribute" -> More attributes-> select Priority->select High.
I hope this helps you.

So here’s what I would do:

On the “Artifacts” page, click on the “Filter by Folder” bar on the right side and click on a folder.

Then click on the “Configure Page Settings” icon on the column header bar in the middle section, and add a column for the attribute you want to filter on. This way you have manual visual confirmation that artifacts in that folder have the attribute values you’re looking for.

Then click on the “Filter by Attribute” bar on the right side. The “Filter by Folder” bar will slide down and should have “is in: <folder you selected>”. Click on “More attributes”, enter/select the attribute name exactly as shown in the column header bar, choose your “contains” or “is any of” or whatever action, and enter/select the values. Then hit “Apply”.

If that doesn’t work, you’re seriously doing something wrong or you're database is screwed up...