Creating Security Group in AWS and assign Security Policy
Type in Group Name and Click Next
Attach Policy
Select one or more policies to attach. Each group can have up to 10 policies attached.
Select the policy which for the group
and click on Create Group. To add users, select the group name
Click Add users to the group and select the users
You can always add or remove users from group and change the permissions by changing the policy
Aryan Nava 