How can I limit the number of connections in openvpn

[AhmadTux]

Hi
This is my first question
How can I limit the number of connections in openvpn?

[AhmadTux]

I mean
  Any time
There is only one connection per account.

[jimp]

There is a box on the server config:

Concurrent connections
Specify the maximum number of clients allowed to concurrently connect to this server.

That limits the how many total connections can exist to the server.