Is it possible to change the title of "Apply on this job" to "Apply for this job" which appears to the right when looking at a job?
Also, is it possible to remove the "How to Apply?" area which appears below it?
These two areas: http://imgur.com/a/pFjsk
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#1. you can remove existing sidebar section by filter hooks and add your own section (HTML) , please see the documentation here
So if you don’t like the “Apply on this job” on title , then add your own HTML.
Please keep in mind “Apply method” are attached on this section (Apply on this job) so, change at your own risk.
#2. “How to Apply?” will be hidden if you keep empty “How to apply ?” on job submission.