Answer:
You can activate the creep and shrinkage to be considered for the concrete design in the Edit Material dialog box (see Image 01).
Once you activate the creep and/or shrinkage for the material, there is the option to define "Advanced Time-Dependent Properties of Concrete" in the dialog boxes for the cross-sections and thicknesses using this material. Select this check box and then define the parameters for the creep or shrinkage in the corresponding tab (see Image 02).
Further information can be found in the chapter of the Concrete Design online manual at the link below.
