Yes, you can change it.
The session Expiration Date can be selected from 12 hours, 3 days, 7 days, 30 days, or 90 days.
For instructions, please check here.
▼Setting the session expiration time (Web browser)
https://teachme.jp/8/manuals/30549046
Related: Tell me about Session Management
https://help.teachme.jp/hc/en-us/articles/900006443883