Hello @mssmx, welcome to the forum!
OpenZeppelin’s ERC20 contract has no owner to speak of, perhaps you’re referring to one of its variants, such as ERC20Mintable? In those cases, there are internal functions that you could call in your constructor to achieve the result you want. Perhaps you could share some code so we can better help you?
Again, welcome! Check out the intros thread and tell us a bit about you. 