No. You cannot use our extended public key feature to autowithdraw to your multi-signature wallets (wallets like Casa or Unchained Capital).
Instead, if you have a multisignature wallet, you have two options for using auto withdraw from Swan:
1.) You can use our extended public key feature to autowithdraw to a single-signature wallet (like Trezor, Coldcard, Ledger, Blue wallet, or Muun). You can then move the Bitcoin into your multi-signature wallet in larger batches.
2.) You can input a single address from your multisignature wallet into Swan and let it be reused for automatic withdrawals. (Read here for why that is discouraged).
You can also withdraw to a fresh address in your multi-signature wallet by using manual withdrawals and adding a new address for each withdrawal.