Hi everyone if make my own freight formations can add them to existing timetables. Not sure how this works any help would appreciate thanks.
Yes, you can. Enter timetable mode, go onto a section of track, press the TAB key then select Spawn New Train, enter your loco which has the formation and select. Press X to place it (once the line turns green). Note: This doesn't put it in the timetable permanently, only for that session you are in. If that's what you wanted then no, unfortunately, you can't place them permanently