Before installing office like this you need to ensure that office has been removed from all target machines.
1. Create a software distribution share on the local network and share to all users
2. Download and configure office for deployment using the Office Deployment tools. Ensure the correct version, language, update path and architecture is configured in the configuration.xml.
3. Create two group policies: The first is to give users local admin rights and remove UAC. The second is to deploy the software.
The the permissions policy you must disable UAC and create an entry in the restricted groups as below. This policy will apply to all computers that the software is deployed to.
The second policy simply adds a login script to point to the UNC path of the Install.bat for the deployment tool.
For more info on this see Installing office with Click to Run.