1. user bookmarked job is attached on each user profile. we don’t create additional table to put it. but we use user meta which is wordpress api it self. so if you need to populate it, you will need to do a loop into user account, and grab their bookmarked job.
2. its work like that now. go to your jobplanet admin panel > job setting > Create Vacancy Setting > Job Vacancy Approval. you can choose which approval type that fit to you.