In order to delegate BNB to the validator of your choice, you will need to have BNB in a compatible wallet.

Getting a BNB wallet

Currently there are 2 official Binance Chain wallets, one a browser extension and the other a mobile app.

Only the Binance Chain extension wallet is able to delegate BNB to a validator on the Staking page at the time of writing.

Binance Chain Extension Wallet

Binance Chain Extension Wallet is a Crypto Wallet for Binance Chain and BNB Smart Chain. You can send and receive funds on Binance Chain & BNB Smart Chain and do cross-chain transfers between both blockchains.

Download link:

Chrome App Store Link: https://chrome.google.com/webstore/detail/binance-chain-wallet/fhbohimaelbohpjbbldcngcnapndodjp
Firefox App Store Link: https://addons.mozilla.org/en-US/firefox/addon/binance-chain/

To learn how to use the wallet, read more here: Introduction - Binance Chain Docs

Trust Wallet (Mobile App)

Trust Wallet is the official crypto wallet of Binance. You can send, receive and store Bitcoin and many other cryptocurrencies and digital assets safely and securely with the Trust Wallet mobile app.

Download link:

iOS App Store Link: https://apps.apple.com/app/apple-store/id1288339409
Google Play Store Link: https://play.google.com/store/apps/details?id=com.wallet.crypto.trustapp

To learn how to use the wallet, read more here: Trust Wallet - Binance Chain Docs

How to withdraw from Binance

Follow the steps below to withdraw BNB from your Binance.com wallet into a Binance Chain wallet.

Log in to your Binance account. Once you’re logged in, hover over the Wallet menu on the top navigation bar, and click on Fiat and Spot.
Search for BNB in the Search bar.
Click on Withdraw. You will be brought to the Withdrawal page.
Enter your Binance Chain address that you can copy from the wallet you have or follow the previous section. Every Binance Chain address will start with the bnb prefix.
Make sure you choose the right chain under the Transfer network. To delegate BNB, you will need to choose Binance Chain (BNB). Select carefully! This action is irreversible if you chose the wrong network.
Enter the amount that you want to withdraw and click Submit to confirm the withdrawal.
Tip: Test with a small amount if you are new and make sure you can receive the amount before withdrawing a larger amount.

Note: you may leave the MEMO field blank when prompted

Delegate BNB to the Validator

To delegate BNB to a validator, make sure you have a minimum of 1.001 BNB in your BNB wallet. If you do not have a wallet yet, refer to the previous section.

Follow the steps below to start delegating.

Go to the Staking page. Click on the Connect Wallet button.
Choose Binance Chain Wallet. Note: WalletConnect is not currently supported.
Click the Connect Wallet button to allow the page to access the wallet.
After the wallet is connected (seen on the top right of the page), click the Delegate button to start delegation.
Enter the amount for delegation. Note: Minimum 1 BNB of stake is required.
Click the Delegate button and approve the transaction in the wallet.
After the transaction is completed, you have successfully delegated BNB to the validator for staking. Hooray! You will be rewarded according to your stake when the validator starts to earn rewards.