This is a space where you can experiment with code and create a proof of concept of a feature you would like to present, it is based on this Atlassian guide about how to build a POC.
It’s important to ask the following questions: What problems will this project solve, and for whom?
Decide on the benchmarks to measure the success or failure of the project. If the project is for a client, consult them about how they define success. If not, conduct the necessary research to determine success criteria.
Will you need to learn a new programming language, does the change implies a change in the architecture? This is the place where you reflect about what resources you will need to build the feature
Manage expectations of the team about the time you will need to develop the feature.
If it is small, you can use an online environment to quickly generate a working, cloud based version of the feature.
Check this tools that can be embed in this notion page:
https://codepen.io/EscobarJ970/pen/VwOXpZm
After gathering feedback, evaluate how the prototype performed against the predefined success criteria.
Present your idea to stakeholders, you can make this notion page public and use it as an information source. More info about this feature in the official Notion docs