So my questions are:
Can I weight his foot envelopes so they affect the toes and they move with the animations too where the foot does? For some reason the "Abs." weighting option can't be used, and the options regarding that below it are disabled ("Rigid", etc.).
How can I skin the foot bones to the toes as well, if the above cannot be done?
Doesn't matter to me if the toes aren't animated, it's only important that they move with the foot, since this is going to be from an RTS view (and privately used).
http://imageshack.us/f/718/76128732.png/

. Is there a way you can link an envelope to multiple bones?