Go to the BarnBridge app at https://app.barnbridge.com/smart-yield
Connect your wallet to the platform.
Choose the originator and pool based on your preferences and hit the "Deposit" button.
On the new page, select senior tranche (Fixed APY) and click on the "Next Step" button.
On the next page, click the switcher below "Enable token" to enable interaction between the smart contract and your wallet.
Enter the amount of token you would like to supply or hit "Max".
Select the lock end date with the predefined options or enter it manually (30 days max).
Click "Deposit" at the bottom of the page.
In the pop-up window choose the transaction processing time and click "Confirm your deposit".
Confirm the transaction in your wallet, pay gas fees and wait.
Congrats, you just bought a senior bond. Now you should see your senior bond on the Portfolio page and NFT in your wallet.