This will depend on whether the Social Trading provider has set a Filters requirement.
Once Social Trading Provider is setting up minimum balance as limitations for followers, Follower's account only need to meet the requirement set by the Provider to join the Offer and start copy trading.
If not any limitations, Follower’s account can join the Provider's Offer with any amount and start copy trading.
Please Note: After subscribing, Follower must click "Activate" to successfully activate the copy trading.