You deploy the .rar as any other enterprise deployments - then you create an activation of the resource adapter.
Like
deploy /tmp/eis.rar
/subsystem=resource-adapters/resource-adapter=eis.rar/:add(archive=eis.rar,transaction-support=XATransaction)
/subsystem=resource-adapters/resource-adapter=eis.rar/config-properties=server/:add(value=localhost)
/subsystem=resource-adapters/resource-adapter=eis.rar/config-properties=port/:add(value=9000)
/subsystem=resource-adapters/resource-adapter=eis.rar/connection-definitions=cfName:add(class-name=com.acme.eis.ra.EISManagedConnectionFactory, jndi-name=java:/eis/AcmeConnectionFactory)
/subsystem=resource-adapters/resource-adapter=eis.rar/connection-definitions=cfName/config-properties=name/:add(value=Acme Inc)
/subsystem=resource-adapters/resource-adapter=eis.rar/admin-objects=aoName:add(class-name=com.acme.eis.ra.EISAdminObjectImpl, jndi-name=java:/eis/AcmeAdminObject)
/subsystem=resource-adapters/resource-adapter=eis.rar/admin-objects=aoName/config-properties=threshold/:add(value=10)
/subsystem=resource-adapters/resource-adapter=eis.rar:activate