Send but do not receive from an account

In Outlook there is a function to “define send and receive groups”, within that you can take an existing POP3 email account and untick “receive” so when the system polls the POP3 accounts for new emails it misses out this account.

That is very useful where I already forward emails from one account to another account under my control but want the ability to send-as from both accounts.

How do I set up the equivalent in eM Client?

Anyone out there know how to do this?