How many girls in Portishead?

Technically and grammatically, a "bevy" is a large group of similar things, So, there is no minimum, maximum, nor even a standard number required to allow one to call a group a bevy.

They are five members in girls aloud Cheryl Cole, Nadine Coyle, Sarah Harding, Nicola Roberts and Kimberley Walsh. At the moment they have all gone solo but they are getting back together, although...

The same as men and mixed volleyball. Indoor - 6 Beach - 2

In order to have a troop, GSUSA requires a minimum of five girls. However, as long as there are enough adults, there is no upper limit on how many girls can be in a Girl Scout Troop or Group.