Outlook and Mobile Phone No.2

Am not sure if it has been discussed before, but I can't seem to find where in outlook i can add/see the 2nd mobile phone no. for my contacts.

I can see the entry i got for my contact as 'mobile phone' but I can't seem to find anywhere the 'mobile phone 2 no.'

any ideas? tnx in advance

it is not mapped by default. Go into the config for DM's and pick a phone number slot.

Could you briefly explain how I can do this please?