Make PowerApps a standard delegated admin role in M365
To be able to edit Project for the web, one needs to be PowerApp admin. This, however is not a standard delegated admin role (as Power Bi admin is for example). At this moment, you can only edit Project for the web with a Global Admin role. However, the Global admin role is way to wide for just this purpose. Please add the PowerApp admin role to the standard delegated admin roles.