A user is granted explicit permission via eIAM to all the WCC portlets by adding him to the Portal Access resource class and ticking all the available options.
The user then logs into WCC, selects 'add content' and expands to:
Enterprise Management -> Unicenter Workload Control Center -> Launch Portlets
Here the user only sees the Quick Start portlet available to be added to the workplace. The rest of the portlets are missing despite having the necessary IAM permissions.
The portal user needs to be added to the WCC_Global default group