08-01-2020 , 10:47 PM
Since secret groups are unsearchable and secretive by definition, you have to know someone who’s in the know to get you in. Here’s how to go about joining a secret group:
Step 1: Ask a current member to invite you. For this to work, you need to be friends on Facebook, too.
Step 2: Check your notifications or your inbox for the invitation.
Step 3: Read the group guidelines. Most often you’ll find group guidelines pinned to the top of the page, in the group’s description, or in a shared document.
Step 4: Look out for a new member post. Some administrators will ask new members to acknowledge that they’ve read and agree with the guidelines.
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Step 1: Ask a current member to invite you. For this to work, you need to be friends on Facebook, too.
Step 2: Check your notifications or your inbox for the invitation.
Step 3: Read the group guidelines. Most often you’ll find group guidelines pinned to the top of the page, in the group’s description, or in a shared document.
Step 4: Look out for a new member post. Some administrators will ask new members to acknowledge that they’ve read and agree with the guidelines.
source