[DOCS] Expands transform setup page with info on spaces. (#86479)

docs/reference/transform/setup.asciidoc

@@ -96,8 +96,11 @@ For more information and {kib} security features, see
 
 {kibana-ref}/xpack-spaces.html[Spaces] enable you to organize your source and
 destination indices and other saved objects in {kib} and to see only the objects
-that belong to your space. However, this limited scope does not apply to
-{transforms}; they are visible in all spaces.
+that belong to your space. However, a {transform} is a long running task which 
+is managed on cluster level and therefore not limited in scope to certain 
+spaces. Space awareness can be implemented for a {data-source} under 
+**Stack Management > Kibana** which allows privileges to the {transform} 
+destination index.
 
 To successfully create {transforms} in {kib}, you must be logged into a space
 where the source indices are visible and the `Data View Management` and