For Sticky Menu:
Step 1 : Go to Dashboard(admin section) and Navigate to Appereance > Customizer > Header Settings > Stickey Menu.
Step 2: Choose the offset according to your requirement. Basically it depends on your header height.
Step3: Check the “Sticky Menu” checkbox to user sticky menu option.
For Header Social Networking Link:
Step 1 : Go to Dashboard(admin section) and Navigate to Appereance > Customizer > Header Settings > Social Networking Links.
Step 2: Enter the social links.
Step3: Check the “Sticky Menu” checkbox to user sticky menu option.