no permision to activate plugins in site's dashboard

Hi,

Now moving site development into the main directory of wallplay.me, for some reason I can not activate plugins or see plug ins that are installed but not network activated. I can in http://wallplay.me/creators/wp-admin/network/plugins.php?plugin_status=all&paged=1&s

Did I forget to make a setting?

With several diverse themes there will be conflicts for sure. So I would like to group the plugins to go with various themes.
In the meantime, I'd like to just have control of the plugins from within any particular install.

How do I achieve this please?

thanks again

L