VVX default alpha password entry

We have a customer using 22 VVX 500's with Hotdesking, those 22 phones are shared between 62 agents that rotate in and out.

Each agent has a unique phone number, and PIN to log into their phone. The trouble they are having is that the field on the phone to enter the phone number automatically sets the key entry to '123'. The password field sets itself to 'abc'. Considering they all use 4 digit PIN numbers this is a huge aggrevation for them.

Is there a way, to set that default password keyboard setting to 123 and not abc?

Thank you.