Yes, however it may not be necessary. Any users created in DonorView that are later deleted, will still show on your list of users, but shown as a deleted user. You may want to consider creating a volunteer user that you can utilize for event help. Many organization will create email addresses like "vol1@yournonprofit.org" or "temp@yournonprofit.org" and use those addresses for volunteer help login.
The same username and password can be logged into DonorView from different devices, so several volunteers can share the same login.
To learn more about user management, see this video: Account User Management - https://vimeo.com/855057481/b5e75d53ea.