Master SSH password?

Hello, Is there a way I can set a Master password for ALL the devices I manage with Kiwi?

I have about 115 device and for new security policy's we need to change or Radius password every 3 month and so I have to chance the password for all the 115 device one by one.

If there a way I can changed all of the at the same time or establish a master password?

Thankz!!