diff --git a/pubsub.go b/pubsub.go
index c6de162..3536a1f 100644
--- a/pubsub.go
+++ b/pubsub.go
@@ -218,8 +218,9 @@ type PubSub interface {
 	GetChannels() []*Channel
 	GetPipes() []*Pipe
 	Pipe(pipeClient *PipeClient, pipes []*Pipe) error
-	Sub(sub *Sub, channels []*Channel) error
-	Pub(pub *Pub, channel []*Channel) error
+	AddChannel(*Channel) error
+	Sub(sub *Sub, matcher func(sub *Sub, ch *Channel) bool) error
+	Pub(pub *Pub, matcher func(pub *Pub, ch *Channel) bool) error
 }
 
 type Cfg struct {