Now, even if you get this far, just be mindful that each product activation is immediately reported to both Contract Manager, and all Software Coordinators (there can be multiple) assigned to a given contract, along with computer identification information so they can know if an activation is to be allowed, or not.
Without one or both of these credentials, you're not going to be able to install anything, even if you had credentials to download from Subscription portal. To install the software on a given client workstation, you'll obviously have to have sufficient permissions associated with your Active Directory (AD) account within the domain, or local Admin assignment. This will take you to another location where you can see all suites, and versions associated with your subscription contract, where you can download each via Download Manager, or browser download. Once in, use Downloads link at left, then click the Download Your Upgrade Now button.
You might have these credentials already if you're assigned as Contract manager, or Software Coordinator for the applicable contract. That said, I use IDSP for daily CAD production, and manage IT for my employer to download software associated with your subscription/contract, you need credentials for Subscription portal online.
Firstly, for many companies (not necessarily yours), intentionally violating IT policy to 'work around them' can be considered grounds for termination.