afni.nimh.nih.gov

Dear all,
I have a little newbie question for which your feedback would be greatly appreciated:
considering the analysis example in the AFNI_data6 (presented in the online tutorials), how does one get the a file like "OLSQ.FR.betas+tlrc.BRIK" (used in group analysis and present in the folder AFNI_data6/group_results) from the files in the folder AFNI_data6/FT_analysis/FT.results ?
Thank you so much!
Best wishes,
Roxana