A Roku stick is a variety of Roku streamer with an HDMI plug that allows it to be plugged directly into the back of the tv without using an HDMI cable.
I think you're asking about an additional remote control. So we can best advise you, please provide your Roku model and model number (found via Settings > System > About).
Roku Community Streaming Expert I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well. If this post solves your problem please help others find this answer by clicking " Accept as Solution.".
Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X