I recommend using Alexa Helper to link your locks to a virtual switch: [RELEASE] Alexa Helper
To do this, you simply create a control scenario, define a momentary button tile (or and Alexa Switch), and define the lock you want to use. As mentioned above you can control WHEN it is activated with mode/time restrictions. The nice thing is that the Alexa Switch is ‘stateless’ so it doesn’t have to be ON to turn it OFF (that may not make sense until you start using it).
Let me know if you have questions.