Answer #1:
No. It must meet the following requirements, given that you have enabled Discovery on your server:
- It must have 7,000 members or more. According to Discord, this number is set to decrease soon.
- It must meet certain activity requirements.
- Moderators must have 2FA(Two Factor Auth) enabled on their account. This can only be enabled by the server owner.
- It must be older than a certain time period.
Given you meet these requirements, you may enable Discovery on your server.