Hi  Biljana,

You can assign their own temperature and pressure to a group of surfaces using the TEMP and PRES multi-configuration operands, even if you only have one configuration defined. The key is that each TEMP and PRES defines the environment for all operands that follow in the multi-configuration editor. The last TEMP and PRES operands listed in the editor define the "global" environment, which will apply to all data not listed in the multi-configuration editor. The TEMP and PRES operands will apply the environment to all operands below it until it sees another TEMP or PRES operand. Essentially, you want to define the temperate for certain thicknesses, radii, etc. with a TEMP operand and place the consequent parameter controls under that operand.

There is a nice discussion about this process in the help files: 

The Setup Tab > System Group (the Setup Tab) > System Explorer > Environment > Defining Multiple Environments within a Single Configuration

To save time, you can use the tool “Add all data”:

This tool will add all data currently in the system to the MCE, so eliminates the need to add many data items manually.

Best,