Modify community/users

Hello,

I would like to know if it's possible to modify the page created automatically by Easysocial :
community/users :

0)a) Is it possible to limit the access to this page ?
0)b Is possible to remove all this page ?

At least, is it possible to modify these points as shown on the screenshot :
1) How can I remove the filter "Users with photo" ? (1)
2) How can I remove "Add friend" ? (2)
3) Is it possible to limit access to this module ? Or to remove it ?
4) How can I hide the number of members of each profile ?


Sorry for all these questions and thanks a lot for your answers,

Edgar