Update proposal process with steps and board

CONTRIBUTING.md

@@ -365,11 +365,22 @@ The main location for the documentation is the [website repository](https://gith
 
 Documents are written with Markdown. See [Writing on GitHub](https://help.github.com/categories/writing-on-github/) for more details.
 
-## Design new features
+## Develop and propose new features.
+### The following simple process can be used to submit new features or changes to the existing code.
 
-You can propose new designs for existing Harbor features. You can also design entirely new features, Please submit a proposal in GitHub.(https://github.com/goharbor/community/tree/master/proposals). Harbor maintainers will review this proposal as soon as possible. This is necessary to ensure the overall architecture is consistent and to avoid duplicated work in the roadmap.
+- See if your feature is already being worked on. Check both the [Issues](https://github.com/goharbor/harbor/issues) and the [PRs](https://github.com/goharbor/harbor/pulls) in the main Harbor repository as well as the [Community repository](https://github.com/goharbor/community).
+- Submit(open PR) the new proposal at [community/proposals/new](https://github.com/goharbor/community/tree/main/proposals/new) using the already existing [template](https://github.com/goharbor/community/blob/main/proposals/TEMPLATE.md)
+- The proposal must be labeled as "kind/proposal" - check examples [here](https://github.com/goharbor/community/pulls?q=is%3Apr+is%3Aopen+sort%3Aupdated-desc+label%3Akind%2Fproposal)
+- The proposal can be modified and adapted to meet the requirements from the community, other maintainers and contributors. The overall architecture needs to be consistent to avoid duplicate work in the [Roadmap](https://github.com/goharbor/harbor/wiki#roadmap).
+- Proposal should be discussed at Community meeting [Community Meeting agenda](https://github.com/goharbor/community/wiki/Harbor-Community-Meetings) to be presented to maintainers and contributors.
+- When reviewed and approved it can be implemented either by the original submitter or anyone else from the community which we highly encourage, as the project is community driven. Open PRs in the respective repositories with all the necessary code and test changes as described in the current document.
+- Once implemented or during the implementation, the PRs are reviewed by maintainers and contributors, following the best practices and methods.
+- After merging the new PRs, the proposal must be moved to [community/proposals](https://github.com/goharbor/community/tree/main/proposals) and marked as done!
+- You have made Harbor even better, congratulations. Thank you!
 
-[community-meetings]: https://github.com/goharbor/community/blob/master/MEETING_SCHEDULE.md
+
+
+[community-meetings]: https://github.com/goharbor/community/blob/main/MEETING_SCHEDULE.md
 [past-meetings]: https://www.youtube.com/playlist?list=PLgInP-D86bCwTC0DYAa1pgupsQIAWPomv
 [users-slack]: https://cloud-native.slack.com/archives/CC1E09J6S
 [dev-slack]: https://cloud-native.slack.com/archives/CC1E0J0MC