@Tom Wrigglesworth,Thanks for posting in Q&A.
From your description, I know that you want to open work profile pin protected and accept biometrics and then the work apps just open without password.
Based on my research, I found that the setting work profile password under Android Enterprise Device restriction applies to the apps in the work profile, therefore, if you open the pin protected work profile and you want to open the work app, you should enter the pin to open it. Moreover, if you want to enable biometric, you can configure weak biometric setting.
Thanks for your kind understanding.
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