Once the new account is created, you can deposit or receive tokens. Highly recommend you wait for co-managers to accept your invitations to become co-signers of transactions before transferring assets into the multi-sig account. Deposit & receive do not require approval but send (withdraw) assets requires co-managers' approval each time.
You can either click on "Deposit into Your Account" button on the Welcome page, when your first created the account, or you can click on Receive in the navigation bar on the left.
First time depositing into your MSafe account, your wallet will flag at you that this new account has no prior transaction. If you copied and pasted the correct MSafe account address, then there is nothing to worry about.