diff --git a/Developming.md b/Developming.md
index 38a3c14..5a316e6 100644
--- a/Developming.md
+++ b/Developming.md
@@ -47,4 +47,14 @@ For build c++ projects QuasarApp group use the CMake build system.
     }
     ``` 
 
+## Submudules
+Almost all quasarapp projects are written so that they can be used as separate modules for new projects. Therefore, the use of submodules is inevitable.
+Here are the basic rules for connecting them. 
+
+1. All submodules must be storaged in the **3rd Party** folder.
+2. Do not include dublicate submodules.
+3. Use submodules recursive.
+    > If you have other submodules in one submodule, you must use the submodules already included recursively in place of adding new ones.
+4. In Cmake build system you must be include submodules only there wher ou using it.
+
 # And good luck it will be useful to you 😉 
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