If you have the ability to crosspost videos between pages on Facebook natively, you can do it in the SND Dashboard!
If you've not yet set up the necessary permissions to do this on your Facebook page(s), here's more information from Facebook.
Here are the steps to Crosspost video in the SND Dashboard:
In the three-dot (...) menu of the post, select "Cross Post Video"
Select the page(s) and enter any text you want included with the Crosspost.
Click "Post Now".
NOTE: You can also crosspost to multiple pages at once, just select all the eligible accounts during step 2. This process does take some time, and due to Facebook rules, there is a delay in between each crosspost to each account you have selected. Be patient, and allow the process to complete.