SPSS, Amos, and 3-Way Interactions

Is it possible to do this with 2 IV's and 1 moderator? It seems to me that this could be done during the compute variable stage because it does not appear that SPSS distinguishes between IVs or moderators or limits how many variables could be entered. I have only found examples of 1 IV and 2 moderators, but am unsure if no one wonders about interactions between 2 IV's and 1 moderator or if there is some statistical reason why this isn't done. I originally considered using Haye's PROCESS for this, but he doesn't have a model designed for multiple IVs and suggests running the moderation analysis with each IV separately. I am just hoping Amos offers a much cleaner option.