Converting multiple DICOM files into one DICOM file

Operating system: Windows 10 Enterprise
Slicer version: Slicer 4.8.0
Expected behavior:
Actual behavior:

I have 157 DICOM images that are broken down into single images. I need to combine them into one DICOM file. What is the best way to do it in Slicer, if possible?

If I understand your question correctly, you would like to create an instance of an enhanced multi-frame DICOM object from a set of single-frame DICOM instances. 3D Slicer does not currently provide such capability.