How to set preferred credentials globally

Hi,
using emcli 13.5.0.0 I am missing an option to set_preferred_credentials globally, not just for the current user.

When managing oracle_pdb preferred credentials via GUI, there is an option to configure default preferred credentials and target preferred credentials both for "my preferences" and "global". Using emcli like:

emcli set_preferred_credential -set_name="DBCredsNormal" -target_type="oracle_pdb" -credential_name="myCredName" -target_name="myTarget" lacks that option and preferred credentials are only set for the current user. I also checked different verbs to edit or escalate given creds to global, but no luck so far.

Can anyone help?