First, goto CA Management Console > Home > Environment > (Ur Env) > Advance Settings > Provisioning
Under Attribute Mappings section
** This is to define the mapping between ur Corp Userstore with Provisioning Store
Map user attribute "physicalDeliveryOfficeName" and "roomnumber" to eTCustomField01 & eTCustomField02
** In Provisioning store, there are 99 available custom feild.
Next, open AD Account Template select the field that you want these value to be sync during creation.
Example:- ** Assuming Title & Company is unused field **
On Title field use rule string %UCU01% for storing "physicalDeliveryOfficeName"
On Company field use rule string %UCU02% for storing "roomnumber"
Hope this help.