You can use the "Magic Two-Finger Z" gesture within the Clubhouse app to quickly escape, dismiss, or close various windows or actions.
To perform this gesture do a two-finger scrub (move two fingers back and forth three times quickly, making a “z”).
Note: There are some scenarios where the gesture may not apply to prevent any unintentional actions.
You can learn more about Apple's iOS VoiceOver Gestures by visiting the iPhone User Guide - Learn VoiceOver Gestures on iPhone.
Need to activate VoiceOver?
If you need to activate VoiceOver on your device, the following article may be helpful: How do I activate VoiceOver & TalkBack with my mobile device?