Hi,
Just bought MainType 10 Standard, I create a GROUP and copy fonts in it,
is it normal that only 18 fonts are allowed in the group ?
No way to copy more ? 
There is no such limit.
that’s what I thought.
How can I fix it ?
You should be able to add as many fonts as you like.
Do install this update and let us know if that solves the problem:
https://www.high-logic.com/tmp/maintype/MainTypeSetup10.0.0.1257-x64.exe
Thanks Erwin,
Installed the update, rebooted and tadaaaa 
63 and adding (out of a 7147 Library !)
- SOLVED -
