I'm using Survey force and when i, try to share the survey on Site.com site getting the error as server DNS address could not be found.

Hi,
I'm unable to complete 'Create a User, Skill, and Configuration' which is part of live agent project.
https://trailhead.salesforce.com/projects/build_branded_chat/steps/build_branded_chat_create

Error: The Skill Support is not assigned to one or more of the given profiles. Please follow instructions carefully.

Please Note: in the trail they mentioned to use Standard User & System Administrator Profiles. When i checked with both the profiles, Standard User  Profile it was not assigned the skill. Also when i tried to edit it, I'm not able to assign the Skill to that Profile. 
 

Hi,
I'm unable to complete 'Create a User, Skill, and Configuration' which is part of live agent project.
https://trailhead.salesforce.com/projects/build_branded_chat/steps/build_branded_chat_create

Error: The Skill Support is not assigned to one or more of the given profiles. Please follow instructions carefully.

Please Note: in the trail they mentioned to use Standard User & System Administrator Profiles. When i checked with both the profiles, Standard User  Profile it was not assigned the skill. Also when i tried to edit it, I'm not able to assign the Skill to that Profile.