If you want to change the setting for multiple accounts, you can use the bulk setting editor.
Click on the button Bulk setting to open the Bulk editor mode. Select specific accounts or all accounts.
Click on the Bulk settings gear button:
The Settings window will pop out. Make sure you specify all the information you want to be applied to the rest of the accounts. The Account name and Custom tracking domain will remain the same unless you change the values manually.
If you leave any of the fields empty (except Account name and Custom tracking domain since they can be unique for all accounts), the values that will be applied to All accounts will be default values.
Once you are done with the changes, click on the blue Save button. The settings will be applied to all the selected leads: