For info.
1/ I want manifest to prefil multiple loads. A pilot and 6 jumpers. Pilots are members that are ‘qualified’ as pilots (boolean in ledeninfo), then jumpers must be ‘active’ to be able to be in a planned load. The planning should be in a (temporarily) database until the drop is completed.
2/(not there yet) In the second dropdown there has to be the type of jump (for each jumper, except the pilot). Options should depend on their (varying) qualifications (qualifications as boolean in ledeninfo) and are listed in ‘Sprongen’.
3/ Third step is assigning a ‘dropverantwoordelijke’ (one of the six jumpers), that, again, have to be qualified to do so. Assigning can be with a boolean, however only one can be assigned per load.
4/ Finally, when the drop is complete, the info must be stored (a database yet to construct) and their account points must be adjusted according points as in ‘Sprongen’ database and the info of the planning has to disappear. (Preferably a message if the load was already checked out on the same day (to avoid double load numbers planning)
Still a way to go…
Just for your understanding where I want to end.
If you already could get me through the first part of point 1 (saving the selected person in the ‘loads’ database upon selection (data should still be there when they are changing pages in the mean time). Info should ideally be based on the unique id of each person, to avoid mix ups when page is reloaded several times. Or let me say, it should be ‘fool-proof’ 
Regards,
Chris