Floor Vibration Analysis

Hello,

I am trying to use STAADs floor vibration analysis utility to determine the acceleration of an indoor footbridge.  I can't find anywhere to change the values from table 4.1 in design guide 11 ( Po, beta, acceleration limit).  It would appear that it has defaulted to "Offices, residences, churches" values.  Is there a way to change this?  Thanks!

 Dan