Here are the three cases for the e-Way Bill login sessions:
Single user –
The login session lasts for six hours if you do not shut the system or reset your login. If you had shut your system or reset your login in TallyPrime, then you will need to log in again.
Multi-user environment (with security) –
A session obtained by a user cannot be shared with others. Each user is required to log in to the portal once in six hours, and the duration is applicable from the time of the first login.
Multi-user environment (without security) –
A session obtained by a user will last for six hours, and since there is no security, the session can be used by any user accessing the Company.