Not all roles in the business get a full office package, i.e. Word, Excel, etc. you will need to be assigned license before you can do the steps below. at least one person in your office will have a license. This is either the branch valauer or branch manager valuer. They can install it on your PC following the steps below by login into their emails on your PC.
You will need to install it from your email. Click the Pattinson log, then click apps form the left and side

You need to click Install Apps, then Microsoft 365. It installs the full package and then should ask you to sign in with your email address and email password.