Bookworm,
Get your hands on a copy of RANT or even flight sim and try the Calais procedures. They can be done!
As far as I am aware, you are correct to say that one can make a parallel entry to the racetrack. Here is your para. b);
b) Parallel entry shall not return to the facility without first intercepting the inbound track when proceeding to the final segment of the approach
For that I read that if you are making a parallel entry and going straight into the final approach i.e. next time at the beacon you will track outbound to the mapt then you must not return to the facility without intercepting the inbound track.
The reason for that is the size of the final approach area at and beyond the beacon and the effect approaching the beacon at an offset angle could have on positioning in the final approach.
If however, you intend to go round the racetrack, you can return directly back to the beacon because that would place you no worse off than a direct entry.
Regards,
DFC