I'm trying to create assignment rules, workflows, or triggers that will change the account owner to our desired user when we mass import leads into our system. 

We have created a custom field titled "Buy From", which tells us the account where the lead purchases their supplies from. I want to make the lead owner the same as the owner of the "Buy From" account when the leads are mass imported. Any idea on best practices to do this?

I'm trying to create assignment rules, workflows, or triggers that will change the account owner to our desired user when we mass import leads into our system. 

We have created a custom field titled "Buy From", which tells us the account where the lead purchases their supplies from. I want to make the lead owner the same as the owner of the "Buy From" account when the leads are mass imported. Any idea on best practices to do this?