If you are appearing SBI PO Prelims Exam today, then you can ask about SEBI Exam booking at TCS ION.
You can ask like this:
On 28th January 2023, which exam booking is there?

If you get any info then please update on a above telegram group.

Real Life example: RBI Assistant to RBI Grade B in 10 years.
If joined at 25-26 years then still 24-26 year's of service is there.
7 years AGM
5 Years DGM
5 Year's GM
and might get CGM tenure for last 1-2 years...but GM is fixed.