sure – please have a look at the walkthrough video:
Then it also makes sense to read the related paper to know what the promises and limitations of our VTA model are (Horn & Li et al. 2018, NeuroImage): https://www.ncbi.nlm.nih.gov/pubmed/30179717
Finally, the VTA nifti files are stored under the /stimulations subfolder in the patient directory after you created them. They are usually in MNI space.