i did both seating chart on the pc,and also using similar tactic to what jaynage did
With word i didnt put cirles on there,just grouped names together until everyone was sitting in a 'group' i thought they'd be comfortable in
if you wanted to have a map sort layout with all the tables and everyone sittting where you want them etc you could try paint?
or if your venue has a template they can send you? Our venue is doing this for us, so i can put everyones names in and send it back to them for when they set up our room hehe
ETA:Our venue,not sure if this is the case everywhere, but most likely is,as would make sense, is seats 1& 10 are the best seat and will be facing the bridal table, seats 4 &5 will have their back to the bridal table
Just keep it in mind when seating ppl hehe