Q. How can I change one of my regular users to a guest?
A. There is no automated way to do this since a regular user is a licensed user and a guest is a free user, but there are steps you can do to achieve this change, using the steps below:
- Open the user's profile page who you want to switch to guests and set a fake email address for him/her, i.e. for an example email Jugdish@abccompany.com set his email address to Jugdish@example.com (example.com is ignored by email servers and won't create an undeliverable mail) and change the person's display name as well - something simple like adding an "x" to the user name will suffice.
- On that same user profile page click the status drop down and change the slider for the Can login setting to OFF. (This will free up a license seat for another regular user).
- Click all the checkboxes of all the activities shown for the filter you set.
- See the Batch operation panel which pops up at the top of Activity Center and click "Manage People" and click the + to add the new guest user to all those listed activities. Do the same for the "old" user but clicking '-' instead.

Note: If you realized you made a mistake with this user and role immediately after creating them and they have no work attached then simply delete the user and proceed with making them a new guest user - but if this user has been logging in and doing work already e.g. sent a message, added a time entry, etc., then the steps, above, must be followed.