[Lazarus] Where in Lazarus 1.5 do I set the project search path?

[Bo Berglund]

Stupid question but when I google I find "solutions" that direct me to
Project/Project Options/Compiler/Paths and Inherited of which only
Paths exist...
Then I am directed to source editor / popup menu / file settings /
unit info / unit paths
But there is no such thing in my Lazarus...
On the Paths page there is no mention of "source editor".

Example webpage with this non-working info:
http://wiki.freepascal.org/Unit_not_found_-_How_to_find_units

So where exactly do I go in Project settings to view/set the project
search path?
I want to partition my sources into functional parts each in its own
subdirectory so the path to that must be set somewhere.


-- 
Bo Berglund
Developer in Sweden