Autodesk license file creation for the use with Multi-User licenses can be generated by either Primary or Secondary Administrators using the below link;
Generate Autodesk Network License File
For implementing the newly generated Network License File, please refer to the guide below;
Autodesk Multi-User Network Licensing
If there are specific requirements to your Network License, such as legacy licensing or perpetual contracted serial numbers, you'll need to raise an A2K Technologies support request and speak with a Customer Success representative for further assistance.