Hello Kath, In the Gantt chart is not possible ProjectLibre information dates of beginning and end of various designs, but you can open multiple projects, click the Project tab - Project and spreadsheet design you can see the information of start and end dates consolidated all open projects. Hope this helps.

Is multiproject roll up in one project summery available now? 

As in MS project one can start a master project and insert (link) tasks or phses of another project plan. 

this way a larger team with multiple projects and shared resources can be managed/.

Thanks

Mehdi