Assistance with Salesforce's new multi factor authentication

Job ID: 35837686

Budget: $30 – $250 USD

My business partner and I each have a Salesforce account but we need to be able to see each other's contacts, tasks, etc, without having to get authentication each time.
Salesforce has advised me that we can do this by using hierarchy's and queues. I tried but failed. It's all Greek to me. Help!