Understanding Multi-Asset Mode
Multi asset mode is a feature available on Binance that functions as collateral margin in trading USDⓈ-M FUTURES contracts. If you enable multi assets mode the system will automatically calculate the total margin you have in your futures wallet.
Here are some assets that support to be used as margin

Please note you must activate the multi asset mode feature and Transfer your asset to futures wallet if you want to use this feature.
For more detail visit this link : https://www.binance.com/en/blog/futures/how-to-use-the-multiassets-mode-to-trade-busdm-futures-421499824684902672
How to Activated Multi assets mode
DEKSTOP
Firstly you need to login in to Binance account
Select the Derivatives menu – USDⓈ-M FUTURES

Then click settings in the upper right corner

Click preferences

Continue by selecting asset mode – Multi asset mode

Multi assets Mode activated
MOBILE APP
please login first
Then open the futures menu – click the 3 dots in the upper right corner, then look for preferences – click asset mode – select multi asset mode
Go to Futures Menu – click the 3 dots in the upper right corner

Click Preferences

click asset mode

select multi asset mode

DONE, Multi assets mode activated
Register Binance : https://accounts.binance.me/en/register?ref=TAXF5KHD
Source 1 : https://www.binance.com/en/blog/futures/how-to-use-the-multiassets-mode-to-trade-busdm-futures-421499824684902672 Source 2 : https://www.binance.com/en/support/faq/29b45c485d664028b9ca1cdf90b24f6f
