Add another work account on a enrolled device

Hello all,

Let me explain my issue with some context :

I have my iPhone enrolled with Intune Company Portal from company I am employed ; all Office apps are configured with it.

I have also, for my own, my own tenant which I am the Global Administrator. I would like to add my OneDrive work account from my own tenant on my iPhone as well, but OneDrive always remove me my own tenant work account. I don’t want to enroll my own tenant work account again on my iPhone, I know this is not possible. I just need to access 2 work accounts in OneDrive. 

I noticed that removing on my account the 2 licences « Intune » and « Intune A - Direct », it seems to work, but I would like to keep the 2 licenses and get it worked with a setting somewhere instead.

Which settings should I set in my own tenant to get this possible?

Thank you for your help,