Hi @armanoj 

Here is the pseudo code for client script on Change. You can try this and tweak the fields as per your use case:

function onChange(control, oldValue, newValue, isLoading) {
if (isLoading) return;

if (newValue === 'risk_event') {
g_form.setLabelOf('issue_owner', 'Risk Event Manager');
} else {
g_form.setLabelOf('issue_owner', 'Issue Owner'); // Default label
}
}

If you find this answer useful, please mark it as helpful/solution accepted.

Thanks and Regards,

Mohammed Zakir