FSM Mobile Question; Where are Custom Fields defined?

Hi All,

In the FSM Mobile Application there are baseline CUSTOM fields, as well as the ability to create CUSTOM fields for any screen.  

Some of the existing Custom fields are; 

• CUSTOM.FULL_NAME
  • DebriefOverview Screen 
• CUSTOM.FORMATTED_TIME
  • JobList Screen
  • Displays a concatenated view of task.plan_start_dttm and task.plan_end_dttm
• CUSTOM.FULL_ADDRESS
  • JobList Screen
  • Displays a concatenated view of address, city, state, zip etc.

There is the capability to add Custom Fields, which you then have the ability to configure limitedly.

My question;   It seems that all allowed configuration through designer is limited to the source and description, as present in the mm_field  table.       Nowhere in the mm_field table, or any other mm_field_** tables, can I figure out where the real source of these custom fields is defined.

Ref guide seems limited to the statement “If the field you want to add is not bound to a specific table and column, select Custom Field”

Where, if at all, in the database/FSM does the system define the source/value for these Custom Fields?? 

Thank you in advance,

-Rudy