Not able to enable activate the New User experience, currently it is greyed out
Release : Any
Before you can enable Modern UX in Clarity, install the PMO Accelerator. Without the accelerator, the options for Clarity are disabled. See Install the PMO Accelerator Add-In and PMO Sample Data.
Follow these steps:
Click Administration, General Settings, System Options.
In the New User Experience section, select Activate New User Experience.
This option provides a global switch that controls whether Clarity is accessible to users. If you do not activate this option and a user tries to access Clarity using the following URL, they are redirected to Classic PPM: