Usergroup Permisions - restrict time between creating threads

[nautiqeman]

I run 3.6.5 and would like to restrict how often a usergroup can create a thread. I don't want to restrict this for all usergroups, just certain ones.

Does anyone know of an add-on or a modification that would allow me to control this?

thanks in advance!

[nautiqeman]

any thoughts?

[nautiqeman]

???