If your bank doesn't offer UPI services for public issues, you can still utilize your bank account for blocking funds. Depending on the application phase (I, II, or III), apply with the respective SCSB or intermediary for fund blocking. Suppose your bank isn't live on UPI. In that case, you can use alternate channels like submitting application forms with SCSB or using linked online trading, demat, and bank accounts (Channel I or II as per Circular dated November 01, 2018). Additionally, 5paisa can assist you in this process.