Allow administrators to login as a member
For many of our members, an administrator is often required to perform tasks for members. This includes buying items from the Online Store, or signing them up for events, or renewing their memberships.
The simplest solution would be to allow administrators to become a proxy for a member, and login as the member to perform these tasks. For those members who never log in (it happens because our members are retired folks with less computer savvy, and sometimes without computers), we can give these members a password that only the administrators know, but we're loath to do that.
For other members who do have logins and passwords, this is not an option.
Thus, to keep things clean from the security standpoint, we administrators need to be able to login as the member (and also to have such activities placed in a log for security purposes).