High blood calcium (hypercalcemia) is a condition of too much calcium in your blood.igh blood calcium (hypercalcemia) is a condition of too much calcium in your blood.
Hiding and revealing your Facebook presence is easy, requiring only a few clicks. Sign in to your Facebook account and click the Chat box in the lower-right corner of any page. Click Options and select Go Offline to hide your name from Friends On Chat lists.ou can see a list of your available friends in two spots. The Friends On Chat list appears in the left column of your homepage, and the Chat box is in the lower-right corner of all pages.
Steps: Click the message link on your home page. It will show your chat history with friends. Click the archive icon next to the person whose chat history you want to hide. It will instantly hide all the chat with that person from your chat history on Facebook. This will hide your chat history from that specific friend from your Facebook messenger mobile app too.