How do I activate the commodity segment on Sahi?

You'll see a prompt to activate the commodity segment when you try to trade a commodity instrument, or you can start it via a banner on the commodity home page.  

You may be asked to submit income proof as part of activation, either through the auto-fetch bank statement option or by manually uploading one of: a 6-month bank statement, a recent salary slip, a current DP holding statement, a latest ITR acknowledgement, or a Form 16 (each with minimum income/holding criteria).  

After you complete the e-sign on the account opening form, it typically takes 24-48 hours for the segment to reflect as active in your profile, after which you can start trading commodities.