Q122: What is the difference between a moderator, site admin and resource admin?

The main site admin can specify (in Site Settings / Moderators) any number of additional moderators who will have access to the checkin24-7 site and all its resources. The privileges of moderators can be set in Site Settings / Resource admin and moderator access permissions. By doing this the administrator can control the exact functionality the moderators will have access to. Out of all the moderators you can also choose the main moderator who can optionally receive any of the defined email / sms notifications. If you want other moderators to receive notifications as well, you can set the BCC field in any customized notification.

Additionally, you can assign an admin to each of your resources. The resource admin also has the administrative privilleges (like site admin or moderators) but limited only to a single resource (or all the resources they are the resource admin of). The resource admin will also be able to receive notifications unless you decide otherwise.

Please see this FAQ question to find out how to limit access of resource admins and moderators to specific administrative pages.