In User Manager in ‘Everyone’ Group right click and choose new user. The User Editor opens up. Notice that in the Password Expiration section

There is no way to set the Expiration (Days) and Expiration frequency (Days) to any other default values globally at the time of user creation.
Once the users are created administrator can use Strategy Command Manager to set the Password Expiration and Expiration Frequency for an entire user group.
Execute the following Command Manager script to change the Expiration Days and the Expiration frequency (Days) for the entire user group:
ALTER USERS IN USER GROUP "Web Users" CHANGEPWD TRUE PASSWORDEXP IN 60 DAYS PASSWORDEXPFREQ 60 DAYS;
For further details on how to use Command Manager to set the Password Expiration and Expiration Frequency for individual users refer to the following Strategy Knowledge Base document:
KB5700-753-1425 - How to set the Password Expiration and Expiration Frequency using MicroStrategy Command Manager