Aspiration to Pursue PSM-I Certification

I have been working in TCS for the last 4 years as a SharePoint Developer and I have an aspiration to pursue PSM- I certification, as I wanted to work on some managerial activities.

As I look forward to taking the exam, I would like to understand the procedure for moving forward with the certification within TCS. I would especially appreciate your guidance on the following points-

1. What is the process to apply for the PSM-I certification through TCS?
2. Does TCS provide a voucher to C1 grade associate for the certificate exam?
3. If not, will the certification cost be reimbursed upon successful completion?