How to check for concurrent activities about a resource

Hello everyone,
as PMO member in a IT Company who has resources and sites across the Europe, I would sponsorship the use of Projeqtor mainly to keep aligned many Projects (basically the Organization Portfolio) in a way that everyone knows who's engaged on which Project and how many time is requested for each resource, but also which interval time (from date to date) is reuqested for each resouce in each Project..
In fact, due to the resource delocalization, It could happen right now that some resource is engaged at the same time in two or more projects from different Pms in different areas, resulting in a potentially dangerous overload (not a real overload, let's say, only a resource reservation).

Obviously, in order to avoid conflicts, resources have limited time (8 hrs or less) and a re-plannig is shared (using usual metrics like ROI or IRR, at Sponsor's charge).

Project Managers at that point usually share information and avoid resource overcharge, but all is made manually. They don't have evidence of this so they must have a weekly meeting in order to re-plan. The goal is to avoid this meeting.
As far as I know, also in Projeqtor there's no evidence for a resource about a POTENTIAL overload. When I say potential overload, I intend that the resource is alvays available in requested Projects according to his STANDARD (so not pre-negotiated) availability (eg.: 100% daily, but it could also be a part-time as i wrote above).
When there are two or more concurrent activities assigned to a resource, in the same Project or in different Projects also, this should lead to a warning (an email, a red dot or whatever) that alerts all involved Project Managers and asks them (and only them) for a conflict resolution. This is my idea.It makes not part of the PM processes, but this warning could be very appreciated. I hope that there's a way to do it whitin the current tool, but It did not reach a solution. The intention here is to help Project Managers to keep resource sharing under control.
Thanks a lot and have a nice day!
Lorenzo

Hi babynus,
Thanks for your very prompt answer!

> This case works fine in Projeqtor. Same resource can take part in several projects, his availability (from cazpacity and already booked projects) will always be taken into account.
Ok. I will see how to. Acually I already assigned work to resources and I intentionally created overlapping, but that did not work. I mean, I maybe forgot something because even if I launch planning, the "today" voice that says "create some planning" does not get green, so it seems that I did not create any plan, but this is maybe not true. See attachment. Maybe I miss something.
Thanks a lot!
Lorenzo

No I did it...