Ok i have a deeper understanding now what the issue is. The reason why i am asking the question is because many people seem to have this problem. For me i will be working on a number of sites with CPT in the near future. On a test install i added the plug-inn CPT-UI and made a CPT. But i understand that manual made CPT has the same problems. As soon as you put the setting "exclude from search" on true or on from that moment the CPT will not appear anymore in the PRO setting tab, therefor you can't allow PRO editor to this new CPT.
What seems to work is the following procedure. Put the CPT temporally on "exclude from search off or false", give permission on the PRO setting for this post type and then change the setting back to "exclude from search" on true or on
The problem clearly is as soon as the setting "exclude from search" on true or on from that moment you won't see the CPT in the pro setting tab so you can't change any value