5 seconds in google tells me that you can call Access with the "/compact" command line switch. Also, there's a KB article at support.microsoft.com that give further details.

Gamers eager to experience the latest features of 'Schedule 1' can now access beta updates ahead of the official release. Developer TVGS plans to test Schedule 1 updates on Steam's beta branch before ...

Despite the game still being in early access, new updates for Schedule 1 are being rolled out all the time. What a lot of people might not realize, though, is that it's possible to try out these ...

As a DBA, establishing a reasonable backup schedule for your databases can be a challenging project. It requires you to balance two competing demands: the need to take image copy backups frequently ...

Beta access for Schedule 1 is readily available for those who purchase the game in early access and add it to their Steam library. If you own a digital copy of this title, you can freely switch ...