Process Simulation: Materials Tab
The following outlines what you can set on the Configuration window Materials tab. The overall steps to set this up are described in Defining the Process Simulation.
This section is similar to how you define the materials for the Equilibrium branch. Some information is explained in more detail for Equilibrium Simulation: Conditions Tab and not repeated here.

Materials are grouped into Steel (or another user-defined Metal group), Slag (or another user-defined non-metallic group), and Gas.
Some of what you choose from lists in this section depend on what you have entered as the Process Model above. For example, the Zone or Reaction zone options are based on those entries (e.g Steel or Slag).
To add one or more material groups click the add button. Click the minus
button to remove a material group. The new material inherits the default settings of that group.
After choosing the Material for the section being defined, also enter a value of the temperature in the field. Choose what Zone or Reaction zone it is to be Added to.
The times and amounts of additions are defined in the Process schedule.

When you click Show composition next to any material group, additional fields display where you can further define each material group.
From this composition area you can click the Save material button to add the new material to the group's list. The newly named material composition is then available for use with that material group.
From the first Input type list select Mass percent, Mass fraction, Mole percent, or Mole fraction.
For the next list, the default is based on which group you are defining. For the Steel (Metal) group it is Element, for Slag it is Component, and for Gas it is Gas component.
Choose Major component so that as you add other components, the major one is adjusted to be the rest of the composition. Choose Normalize to total of 100% so that the sum is adapted to 100%. This is useful if you need to work with a given composition that does not sum up to 100%.