Can I assign a guide to more than one group?
The answer is no - not really. Because groups can have their own unique customizations, including head, banner and footer code if you could assign a guide to more than one group -> which group customization is applied.
We do have some suggested workarounds:
1. Don't apply a guide to any group: it will inherit your system-wide customizations and it will be search-able from every group homepage.
2. Create multiple copies of the same guide and add each copy can be added to its own group.
If you decide to go this route, we strongly recommend that you created linked pages or boxes between guides so that when you have to update one guide -> the linked pages/boxes will trickle those updates down.