Peter is responsible for the 3 training programs. Let’s make it official!
First, open the project and add Peter as a stakeholder. An L1 access is enough.
Then open each of those three training programs, go to the settings section, and in the custodian drop down box, select Peter. Remember that this drop down box only shows the existing stakeholders, and you need to add people as stakeholders for the project, portfolio, or organization first.
Now, even though we’ve not given Peter write access to the whole project, he can still edit his own items; e.g., update their progress.
On the other hand, it’s good practice to have a custodian for every deliverables. This person is responsible for doing the work, or represents a team that does so.