Linking to minipanel

We want to link to minipanel in two different scenarios:

Scenario 1: We are in the company screen, on a one of our webpanels. We want to open the project minipanel on click of something, without navigating away from the company screen.

Scenario 2:  Still on a tab in the company screen, and we now want to open some custom web panel with some parameters in the minipanel. Using ClientCrossMessaging with something like this superoffice:sidepanel.testpage?contactid=123 seems to activate the correct panel, but it will no reload. And not every time...

HOw to do it properly ?