To merge/intersect the time tables drag them from the Time Tables tree and drop onto the panel of the opened Operations on Time Tables module. This module can be also opened from context menu (right click on TimeTable name in the Workspce Explorer tree). The result time table is saved into your Workspace and is automatically loaded into the Time Table Manager.
The name of the result time table in the case of two input tables:
In the case of more than two input tables: