How to Hide Your Chat Availability
Under normal circumstances, the friends you see in the chat area can see that you’re online. But, you can change these settings so that some or all of them can’t see that you’re available to chat. Use this function when you want to be on Facebook without being interrupted. You can turn off chat for all your friends, some friends only, or everyone with some exceptions.
Select Messenger in the left pane of Facebook. Select the Settings icon. Choose Settings. Turn off the Show when you’re active toggle switch. You’ll need to change your active status everywhere you’re logged in to Facebook (for example, the mobile and Messenger apps) to completely hide your active status.
How to Appear Offline in the Messenger App
To appear offline on your phone, adjust the settings in the Messenger app. Here’s how to do it.
Tap your profile image in the upper-left corner of Messenger. Select Active Status. Turn off the Show when you’re active toggle switch.
How to Restrict Someone on Facebook
Normally, your Facebook friends can see everything you post on your timeline. You can adjust this default by choosing with each post who can see it. When you don’t want to unfriend someone but don’t want them to see your posts, add them to your Restricted list. You might use this option if you accepted a coworker’s friend request but don’t want them to know much about your personal life.
Navigate to your friend’s profile. At the top of the profile, select the Friends drop-down menu and then choose Add to another list. Select Restricted. A check mark appears next to Restricted. To remove someone from the Restricted list, follow the same steps again. In step 4, the check mark next to Restricted is removed.
How to Block Someone on Facebook
If you block a user on Facebook, they can’t add you as a friend, message you, invite you to groups or events, see your timeline, tag you in posts, or find you in a search. If you’re friends with someone and then block them, you automatically unfriend them.
From the upper-right corner of Facebook, select the down arrow. Choose Settings & Privacy. Choose Settings. In the left pane, select Blocking. In the Block users section, enter the person’s name and select Block. If you want to block apps, invites, or pages, use those respective areas on the Manage Blocking page to apply those changes. A Block People window appears. Find the correct person and select Block next to their name. A confirmation message appears. Select Block person’s name to block and unfriend them (if you’re currently Facebook friends).