Omniscope allows you to filter across multiple tables using Filters view. Being a multi-table view allows you to show multiple fields (across multiple tables) linked to the Report.
A very common example of this could be you have two date fields across two tables, and you want to have a single range slider to filter both tables based on the date. However, you can link any similar fields (of the same data type together).
How to create a linked filters
If you now filter now it would filter both link fields at once.
Here is a live example, you can additionally download the example as an IOZ (see attached file). The example, uses "Ticker" field across multiple table and then uses filters view to filter multiple tables at once.
I hope this helps.