PCC through PSK is the right way. Please read below of how to go about with applying for PCC via PSK anywhere in India.
Go on the Passport Seva Kendra (PSK) website and make an account. Go for the PCC option. You will have to fill the form, give 2 people's names (Family, friends or neighbours) along with their address and phone numbers. Pay online or via SBI bank, it's around Rs. 500 for PCC. Then choose your date of appointment and centre. You will need only your passport (a copy of front page, back page and the passport officer's signature page), aadhar card (just keep another identification document from the Gov. of India, just in case) and the acknowledgement receipt to show at the PSK reception desk. They will send you to counter A for online form filling and photo clicking (the photo will be in grey so doesn't matter what you wear), then they'll send you to counter B for verification and questioning and then to counter C. If all is ok, you'll get the PCC and get your passport stamped. They may ask you to wait for Police verification, in which case the local police office will try to contact you in 4-5 days. You will have to go to the police office with ALL DOCUMENTS (Phone bill, electricity Bill, PAN Card, Aadhar Card, SSC/HSC Certificates, Photographs, Passport Old/New and some other) according to the receipt given by the police officer. It usually takes a week or two after submitting your documents at the police office. You'll receive a notification (SMS or email) that your PCC is ready and you'll have to go and collect it from the PSK you applied to.
PS: Take a early morning appointment otherwise you might have to wait for 3-4 hours or more to reach counter C.