From the Project go to Tools>Manage Users. In this dialog you can:
1) Create users and assign them to groups
2) Create groups and assign permissions to the group
You need to have at least one administrator account and as Alex pointed out you can't delete the current user account. So if you don't already have users other than the Administrator user, start by creating additional accounts and assign them to the Operator group. Then click on the operator group and uncheck the permissions that you do not want the Operators to have. The user permission for entering Edit Mode is tied to the "Add Display Items" permission. If you also want to prevent the operators from accessing the Property dialog of the controls (and editing the settings of an existing control) then you can turn off the "Edit Display Items Settings" permission. If you want different operators to have different levels of permission you can create additional groups and assign the users to the different groups.
Carl L
National Instruments
