If you launch your Autodesk software and get a message: "Contact your administrator to request permission to use this product" you will need to do the following to gain access to use the software.
Find the Autodesk Contract Manager for your company. This is going to be the person who purchased the software. Need more help? Here is my blog on Who is my company's Autodesk subscription contract manager.
Once you have figured out who is the Autodesk Contract Manager for your company they can sign into https://manage.autodesk.com using their Autodesk user name and password.
If you don't know your sign in or password you can enter in your work email and click NEXT.
Then click on the FORGOT? link to rest your password.
HOW TO GIVE PERMISSIONS TO YOUR USERS
NOTE: By default one of the Autodesk seats you purchased will automatically be assigned to you the Contract Manager. Sign into your Autodesk account and verify you don't have unnecessary seats assigned to you.
Click on the User icon. If you are the Autodesk Contract Manager and you do not see these icons to the left of your Autodesk Account contact your Autodesk reseller so they can get this fixed for you.
Verify the user(s) is showing in the list of All Users. If there are users missing you need to add them by click on the Add button at the top of the page.
If there are users in the list that no longer work for the company you can delete them by first clicking on Edit Access and removing any check marks then click Save.
To Delete their name click on the X by their name. If there is no X that means they are the Contract Manager or the Software Coordinator and you will need to call your reseller to get them removed.
To assign a user to the software you will click on Edit Access on their name.
If you cannot put a check mark next to the software because there is zero seats available this means that someone else or you the Contract Manager has the software assigned to them. You need to click on Edit Access on every user to see who has that seat of software and first figure out why they have it and if they are using it.
You do not want to un-assign software from a user that is using the software. This will cause a lot of issues.