Can I split a Maxon license among multiple devices?

No, a Maxon license can not be split among multiple devices. 

All Maxon licenses act as a single license regardless of how many products they may include (e.g. Maxon One, Red Giant, etc.).

For example, if you are using Cinema 4D and Redshift on Device A and would like to use Red Giant plugins on Device B, you would need to release your Maxon One license from Device A so you can use it on Device B.

If you need to use Maxon products on multiple machines at once, you'll either need to purchase another seat, or transfer your license between machines, which can be done however many times you'd like.