Flitering a table with a Boolean "OR" operator can be done directly for a given column as shown below:
To filter a table with a Boolean "OR" operator across two different columns such as Fold change >2 (1hr vs. control) or fold change <-2 (4hr vs. control) do the following:
Set each column filter... By default, ArrayStudio uses the "AND" Boolean operator to "Match All Columns":
You have to change this to the Boolean "OR" operator. Select from the View Controller Options drop down menu "Match Any Columns" and shown below: