My multi user pro license is expiring in 30 days

My multi user pro license is expiring in 30 days. What steps are needed to update my machines, both local and remote with the new subscriptions? Attempting to create a procedure and determine a level of effort to accomplish this task with hundreds of machines. Any help is appreciated.

contact avast http://www.avast.com/en-eu/contacts

Generally, if you have hundreds of workstations, it would be easier to handle them with a managed solution than using standalone Pro versions.
If you have some kind of logon script where you can start arbitrary executable, it should be possible to use aswChLic.exe from avast! installation folder (probably something like “aswChLic.exe path_to_new_license_file /silent” - though I’m not 100% sure about it).