Conference Calling: Admin to change host code/participant code for security reasons

It is disappointing that this issue was raised two years ago and there is still no practical solution provided by RingCentral.  When I give out my participant code to employees for a regular periodic meeting, and one employee leaves the company, he can then use the same code to join the same meeting.  There is no mechanism to require a password nor to change my participant code.  This is a major security issue.

The complete lack of response by Ring Central to these kind of EXTREMELY OBVIOUS and EXTREMELY NECESSARY features has me seriously questioning my decision to use RC as a phone provider.