Be even easier for me then to just tell you what to do
using the window you have listed above do this
1. Under VIDEO TITTLE SET 1
2. click on PGC1 under the Program chain
3. Click on the POST Commands Tab (step 4 and 5 you can skip if the dvd is already set like this, read below)
4. If is this the way I think it is you will probably see a command
with something like this: CALL VMG PGC (whatever number it has)
If it has that, RIGHT click on it (the command) and hit COPY. We are going to paste that command under the POST command options for PGC2. This way it guarantees once the film is truly over it goes back to the main menu. IF PGC2 has this command already then just ignore this step as well as step 5 and GO TO STEP 6
5. NOW Click on PGC2 and go under the POST commands. If no command is present or at least no CALL VMG PGC command is there, delete (if anything) what is listed under post commands (select the command by clicking on it, right click, delete). Once the post command box is empty, right click and this will paste the post command copied from pgc1 onto pgc2. Now after the film is over it will go back to the main menu
6. Ignoring step 4 and 5, we continue from step 3. Right now we are on the POST command tab under PGC1. DELETE any commands that are listed under the tab (right click on the command and hit delete).
7. Right now you should be under the post command tab for pgc1 and that whole box should be empty showing no commands at all.
8 RIGHT click somewhere in the post command box and choose the option "ADD COMMAND"
9. We are going to link pgc1 with pgc 2. SO after pgc 1 plays it will tell the dvd to continue on and go to pgc2
10. SO right click in the post command box, select add command. A new drop down box will appear. From that select "link instructions". Once this is done, on the bottom of that link instruction box you will see an option to place two check marks to enable even more options. SELECT THE VERY BOTTOM ONE. NOT the one that has the words "condition" next to it
11. In this new box choose this option "link pgc". Once you do this you will see the pgc# box showing 0. Change that to "2".
12. That is it! That was all yu had to do. NOW under "file" on the top left, choose tthe export option of "export modified files", and save them somewhere on your pc. With the files that are exported you use those to overwrite what is in the dvd video_ts folder (if you still have this on your hard drive). Now when you play it, the disc should go fro,m the first film and right into the second. Burn your disc.
13. Likewise you can also just make an archive of those exported files and upload it making sure people know that every file in that archive is going to overwrite what file is in that dvd folder--
I am sure i made this more confusing then it should have been