We need to create multi-website and backend admin is only Magento admin how can that possible.
Please provide multi-website URL if any website exists live.
Can anyone help?
Take a look at: https://magento2.atlassian.net/wiki/spaces/m1wiki/pages/14024868/Multiple+Website+Setup+with+Differe...
Also, there are a lot of references and examples about this configuration for Magento1 if you search a little bit.