diff --git a/CONTRIBUTION.md b/CONTRIBUTION.md
index 6927572..7fd1506 100644
--- a/CONTRIBUTION.md
+++ b/CONTRIBUTION.md
@@ -31,20 +31,24 @@
 
  ## Where to ask for help
 
- 1. [Github Issue Tracker][tbissue]: for discussions about new features or established bugs
- 2. [Gitter chat][gchat]: for real-time discussion
+ 1. [Apache Jira Issue Tracker][aissue]: for discussions about new features or established bugs
+ 2. <dev@marvin.apache.org>: for general development discussions
 
  ## Separate Code Repositories
 
  [Marvin-AI][marvinai] maintains all your code and documentation in multiple repositories on the Github. This includes the primary repository and several others repositories for different components.
 
+ ## Standard procedure for contribution
+
+ 1. Fork the repository from [Here][marvinai].
+ 2. Create a new branch in the forked repository for new changes.
+ 3. Create pull request from your branch to the main repository using a name that start with issue ID.
+
  # Code of Conduct
 
  Our Code of Conduct is available at [Here][codepage]
 
  [codepage]: https://github.com/apache/incubator-marvin/blob/master/python-toolbox/CODE_OF_CONDUCT.md
  [installguide]: https://github.com/apache/incubator-marvin/blob/master/python-toolbox/README.md
- [tbissue]: https://issues.apache.org/jira/projects/MARVIN/issues?filter=allopenissues
- [gchat]: https://gitter.im/marvin-ai
+ [aissue]: https://issues.apache.org/jira/projects/MARVIN/issues?filter=allopenissues
  [marvinai]: https://github.com/apache/incubator-marvin
-
diff --git a/engine-executor/CONTRIBUTING.md b/engine-executor/CONTRIBUTING.md
deleted file mode 100644
index b48bca0..0000000
--- a/engine-executor/CONTRIBUTING.md
+++ /dev/null
@@ -1,40 +0,0 @@
-# Contributing
-
- When contributing to this repository, please discuss the change you wish to make via issue or 
- Gitter with the members/administrators of this repository before. 
-
- ## Get started
-
- Clone the repository, [install][installguide] and run "marvin test" to confirm the installation.
-
- Choose the issues that are labeled as "Good First Issue".
-
- ## Unit test
-
- The unit test is very important and of course it's required for this project, you can use "marvin test" command to run your tests.
-
-
- ## New issue and pull request
-
- The community discusses and tracks known bugs and potential features in the [Github Issue Tracker][tbissue]. If you have a new idea or have identified a bug then you should raise it there to start public discussion
-
- This repository contains Issue Templates and Pull Request Templates, just follow the instructions described in templates.
-
- ## Where to ask for help
-
- 1. [Github Issue Tracker][tbissue]: for discussions about new features or established bugs
- 2. [Gitter chat][gchat]: for real-time discussion
-
- ## Separate Code Repositories
-
- [Marvin-AI][marvinai] maintains all your code and documentation in multiple repositories on the Github. This includes the primary repository and several others repositories for different components.
-
- # Code of Conduct
-
- Our Code of Conduct is available at [Here][codepage]
-
- [codepage]: https://github.com/marvin-ai/marvin-python-toolbox/blob/master/CODE_OF_CONDUCT.md
- [installguide]: https://github.com/marvin-ai/marvin-python-toolbox/blob/master/README.md
- [tbissue]: https://github.com/marvin-ai/marvin-python-toolbox/issues
- [gchat]: https://gitter.im/marvin-ai
- [marvinai]: https://github.com/marvin-ai
\ No newline at end of file
diff --git a/python-toolbox/CONTRIBUTING.md b/python-toolbox/CONTRIBUTING.md
deleted file mode 100644
index 7b87e9a..0000000
--- a/python-toolbox/CONTRIBUTING.md
+++ /dev/null
@@ -1,41 +0,0 @@
-# Contributing
-
- When contributing to this repository, please discuss the change you wish to make via issue or 
- Gitter with the members/administrators of this repository before. 
-
- ## Get started
-
- Clone the repository, [install][installguide] and run "marvin test" to confirm the installation.
-
- Choose the issues that are labeled as "Good First Issue".
-
- ## Unit test
-
- The unit test is very important and of course it's required for this project, you can use "marvin test" command to run your tests.
-
-
- ## New issue and pull request
-
- The community discusses and tracks known bugs and potential features in the [Github Issue Tracker][tbissue]. If you have a new idea or have identified a bug then you should raise it there to start public discussion
-
- This repository contains Issue Templates and Pull Request Templates, just follow the instructions described in templates.
-
- ## Where to ask for help
-
- 1. [Github Issue Tracker][tbissue]: for discussions about new features or established bugs
- 2. [Gitter chat][gchat]: for real-time discussion
-
- ## Separate Code Repositories
-
- [Marvin-AI][marvinai] maintains all your code and documentation in multiple repositories on the Github. This includes the primary repository and several others repositories for different components.
-
- # Code of Conduct
-
- Our Code of Conduct is available at [Here][codepage]
-
- [codepage]: https://github.com/marvin-ai/marvin-python-toolbox/blob/master/CODE_OF_CONDUCT.md
- [installguide]: https://github.com/marvin-ai/marvin-python-toolbox/blob/master/README.md
- [tbissue]: https://github.com/marvin-ai/marvin-python-toolbox/issues
- [gchat]: https://gitter.im/marvin-ai
- [marvinai]: https://github.com/marvin-ai
-