Log in to your Bet365 account and select the 'Sports' tab. Select the markets of your choice and add them to your bet slip. Make sure you have at least three selections, as this is the minimum required for an accumulator bet. Once you have added all your selections to your bet slip, select the 'Accumulator' option.
Many online betting sites, including bet365, use geo-blocks to stop users from accessing their services while outside of licensed countries. This means that if you travel to another country where bet365 isn't available, you won't be able to place a bet.