Screen personalisation

Hello,
I found that projeqtor provide a plugin that allow us to customize some view. I wanted to know if this plugins allow us to add some new field in order to see, from a project view, every elements linked to this project like activities, incomings and deliverys documents ... Like this we can navigate throught every elements from the project's view instead of going somewhere else in projeqtor(another screen). Currently we can't do that (except from using the link elements field).

Here's a screen to illustrate my words

so a solution can be to link these elements to the project?