How do we enable PDF for Tiff conversion

Problem

I want to enable PDF for tiff conversion but this option is greyed out in the Project Settings.

Resolution

Once we have created a case, this setting cannot be changed. We need to choose this option while creating a case. In order to select PDF for image conversion option, the control setting key 'ENABLE_PDF_IMAGING'  should be set to 1.

update tbl_pj_controlsetting set [value] =1 where [key] = 'ENABLE_PDF_IMAGING'