Trending @Accenture; What is the correct end date in a project, the date in the jobs gateway or the date in the RoRo tool?

Neither.

Roro tool is set based on project need. For example if I need a ba I'll set date till I need them. For dev I will set date till the end.

But as a resource you should always follow roro tool date as that's the timeline you're planned on the project

Yes, it depends on your manager, if they want to extend they can extend

You will get at the time of roll on to the project at starting

Its Roll on Roll off tool

For ASEs, who are buffer resource case in project?