This setting defines the maximum number of orders allowed on the Receiver account, if the number of orders on this account is more or equal to this parameter then all new tasks from the Source account will be ignored.
So for example:

1. You set "Ignore new orders if current price of opened orders is..." = 5.
2. Currently there are 2 BUY orders and 2 BUY STOP orders on Receiver account.
3. After that, you get the new task from the Source (let's say SELL order). This order will be processed.
4. So you will have 2 BUY + 1 SELL + 2 BUY STOP = 5 tasks in total.
5. After that you get another task from the Source (let's say SELL LIMIT order) this task will NOT be processed because the total number of orders on the Receiver account is 5 so the task will be ignored.

 To activate this setting please open Forex Copier 2 program, click “Settings” on Receiver account, go to “Filtering orders” tab, activate “Ignore some orders from Source account”, click “Show advanced settings”, activate “Ignore new orders if current number of opened orders is … or more” and enter necessary value there.
After this, please click “Save and Finish” button and then “Apply Scheme” to apply new settings.