Feature: Mandatory field for managers where they must leave a contact phone number

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Mandatory field for managers where they must leave a contact phone number for us to reach them in case of emergency.
Only visible for us.

The whole thing because an organization manager from whom we have the contact details is no longer a manager of the organization.
So now we have a lot of organization managers and facility managers that we can't contact because there is no real organization behind this group of helpers.