Yes! If you're sending a document for signing that mustn't be signed after a specific moment, you can specify the exact time and date that the case will expire. Enter the fixed date and time formatted as yyyy-mm-dd hh:mm in Central European Time (CET).
You can also set a time frame (a certain number of days).
These settings are made under Signing deadline in the settings for your case. The settings can also be made to a template.
Note that the deadline is absolute, and that no party will be able to sign the case after the period has expired.