If you are having formatting issues when saving a .ps file using the Print to Booklet command in InDesign, the issue may be that an appropriate PPD isn’t installed on your computer. Following the instructions below to fix the problem.

1. Quit InDesign.

2. Navigate to /Applications/Adobe InDesign CC 2018/Presets/.

3. Create a folder named PPDs

   The folder name is case-sensitive.

4. Download the ADPDF9.PPD.zip file using the link below

ADPDF9.PPD.zip

1. Extract the ADPDF9.PPD from the downloaded zip file and place it into the PPDs folder created in step 3.
2. Launch InDesign and select Adobe PDF from the PPD list.

The options to customize page are now enabled.