Exporting your secret key from LOBSTR
1. To add liquidity you'll need MayoCoin and Stellar Lumens (XLM). N.B. Adding to a liquidity pool (LP) uses an additional 1 XLM deposit. You can export your "S..." secret key from LOBSTR in Settings→Wallet→Secret Key.
Importing your secret key into Albedo
2. In Albedo import your secret key. You should be able to see your public address and balances.
Adding liquidity in Albedo
3. In Albedo choose the Liquidity tab. Choose how much MayoCoin (or XLM) you want to stake and the XLM (or MayoCoin) will be automatically calculated for you at the current exchange rate. Press Deposit and you're done! You can check your stake at stellar.expert.