What two things should a Salesforce Admin do to accomplish this?

What two things should a Salesforce Admin do to accomplish this? Universal Containers needs to create a Support Community with the following requirements:• Customer and partner users will be members of this community and use the Customer Community and Partner Community License, respectively.• A customer user should be able to see all cases opened for their account, including cases opened by their colleagues.• Customer users must be able to collaborate with all Community users.