BP-782, add concept of extending the application
diff --git a/oKBereitschaftsplanungBackend/src/main/asciidoc/arch/src/08_concepts.adoc b/oKBereitschaftsplanungBackend/src/main/asciidoc/arch/src/08_concepts.adoc
index 88343db..6b9e10c 100644
--- a/oKBereitschaftsplanungBackend/src/main/asciidoc/arch/src/08_concepts.adoc
+++ b/oKBereitschaftsplanungBackend/src/main/asciidoc/arch/src/08_concepts.adoc
@@ -1,3 +1,8 @@
[[section-concepts]]
== Concepts
-Not defined yet.
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+=== Extending the application
+The Standby-Planning module is using parts of the openKonsequenz base functionality like the Auth&Auth modul to get in connection with the Keycloak authorization service.
+
+For the module itself there was no further modularization needed. That means that there is no implemented plugin or extending mechanism right now. The only part were it could be possible to make a submodule could be the reporting part. But even there it would not work without the rest of the application. So it would not make sensce to outsource this part because many parts like Entities, DTOs and Data Access Objects would be needed, too.
+
+That means if there is a need of changing or extending the application it should happen in the module itself (or in a branch if changes should not be used in default version). Therefore every eclipse committer of the openKonsequenz is able to get the code by cloning the repository and changing it by committing and pushing it back to the eclipse git.
\ No newline at end of file
