I went over some of this for your earlier flight (EGPH-EHAM):
viewtopic.php?f=8&t=3256&sid=778976a295 ... 9f2#p19572
For starters it is probably easiest to not bother setting End-of-SID and Start-of-STAR waypoints at all. The basic functions are at the bottom of the SID/STAR page. On the main PF3 screen, click the SIDs/STARs button. At the bottom of the screen are the SIDs and STARs checkboxes. If the SIDs box is unchecked, you will get vectors after takeoff putting you on course to your first waypoint. If the SIDs box is checked, you will NOT get vectors. It's up to you to get to your first waypoint on your own or by flying a procedure. So in your example if the box is unchecked you will get vectors to TLA. If the box is checked you will not get vectors to TLA and you can fly the SID loaded in your FMC.
The STARs box controls what happens after your last waypoint. If the box is unchecked you will get vectors to the active runway for landing. If the box is checked, you will NOT get vectors after the last waypoint. You will be cleared to fly to the assigned runway approach course on your own, either by hand or by an approach loaded in your FMC. (Setting a Start-of-STAR waypoint does not affect this. The checkbox controls what happens after the last waypoint.)
Setting waypoints for End-of-SID and Start-of-STAR is optional and at least for now I would skip this because you can get the basic functionality with just the checkboxes.