There is a minimum amount of an equivalent of CHF 5'000 for the following staking currencies: Tezos, Kusama, Cardano, Polkadot, Celestia and MATIC. There is a minimum amount of an equivalent of CHF 10'000 for staking NEAR. There is a minimum amount of an equivalent of CHF 100'000 for staking GLMR. ETH can be staked in multiples of 32 ETH.
All information with respect to the staking offering of Bitcoin Suisse can be found here