Step 1: Click Site Pages
Step 2: Click on the Site Actions drop-down menu on the upper left of the page. Then select Site Settings.

Step 3: From the Site Settings page, select Site Permissions found in the Users and Permissions group of the Site Settings page.

Step 4: Click the Create Group button.
Step 5: On the New Group page, enter a group name Admin Step
6: Grant everyone permission to view group membership. Step
7: Grant group members editing rights by assigning the Design permission. Step
8: Finish creating the group by clicking the Create button at the bottom of the page.