I am remodeling a shower and havi to move my vent stack (the main vent stack) and want to know if it HAS to be the last out crop of the sewer line? Could I put it in the say middle? Ranch house with 4 baths 2 kitchens (in-law apt)

havi to move my vent stack (the main vent stack) What fixture trap is thiis venting? Is anything draining into this stack? How old is this house? Back to you, Tom