You can now pause and unpause your queues for each social account individually on Crowdfire.
To get started, once you're logged in to your Crowdfire account, you can follow these steps -

  1. Tap on settings (gear-like icon) at the top right of your screen.

  2. Under channels, select the social account you'd like to pause the queue for.

  3. Now, tap the toggle key near 'Pause Publishing Queue' 

All your scheduled and best-time posts will be paused after activating this setting.
You can unpause the queue by tapping the toggle key again. 

I also made a quick video of the steps -  How to pause and unpause the publish queue.