How to pause a sequence based on event

In reply to chr_sue:

In reply to cuonghle:
Note, the traffic between sequencer and driver is determined by the driver NOT the sequencer.
The sequencer doe NOT send any transactionn to the driver. The driver is polling a seq_item. It is just easy to implement your behavior in the driver.

What you said is confusing.
The topic owner has 4 sequences, they start same sequencer and there is one driver to drive the transaction to DUT. Now, he wants to pause (stop sending traffic) from a particular sequence, but other sequences are still working.
Why you want to implement this behavior in the driver? And how?
In order to pause, the easy way is pausing the source of the traffic which is in sequence.