Add transparent communication section to communication guidelines handbook

To learn more on when to use asynchronous and synchronous communication, examples of async workflows in practice at GitLab, core async behaviors, and to take an async knowledge assessment, visit [GitLab's guide to embracing asynchronous communication](/handbook/company/culture/all-remote/asynchronous/).

### Transparent Communication

As GitLab grows, multiple teams are working together to scale up our processes, policies and systems. Leadership DRIs also strive to make decisions that will directly or indirectly impact team members. In order to make sure we provide adequate communications on these incoming changes, the following communication matrix aims to provide guidance for both leadership and team member on what to expect for each type of change.

| Communication Type | Explanation of Why | Feedback Mechanism | Example |

|-----------|-------------|---------|---------|

| **Decision has already been made** | Within confines of SAFE, explain why this decision was made, and "What prompted you to make this decision" | Provide a link to an issue or similar where feedback can be submitted but with the understanding that the decision may not change in the near future | GitLab's New Operating Model |

| **Intent/Proposal discussion** | "Why" is explained in detail, with data where possible. Include "What are we looking for, Problem to solve, Here are all the options, go deeper" – what do you expect from others (based on what they can influence) | Provide a link to the issue or similar where feedback can be provided. Also share timeline by when feedback is gathered and provide updates on decision making process | Moving Friends and Family to End of Year (we've seen problems with XYZ so we'd like to move to end of year, and would like feedback on these specific / more targeted areas) |

### Communicate directly

When working on a problem or issue, communicate directly with the people you need support from rather than working through reporting lines. Direct communication with the people you need to collaborate with is more efficient than working through your manager, their manager, or another intermediary.