Yes, you can report to the allotted college on August 30th at 4 PM to confirm your admission. The admission process typically involves the following steps:

1. Document Verification: The college will verify your original documents, such as your COMEDK rank card, 10th and 12th mark sheets, and any other required documents.
2. Fee Payment: You'll need to pay the admission fees as specified by the college.
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3. Seat Confirmation: After verifying your documents and paying the fees, your admission will be confirmed, and you'll receive a confirmation letter or receipt.

The time taken for the admission process can vary depending on the number of students reporting to the college and the efficiency of the admission staff. However, it generally takes a few hours to complete the entire process. It's advisable to arrive at the college well before the reporting time to avoid any delays.

Remember to check the specific guidelines and instructions provided by COMEDK and the allotted college for any additional requirements or procedures.