diff --git a/src/ShellToken.sol b/src/ShellToken.sol
index ae466e4..4edf859 100644
--- a/src/ShellToken.sol
+++ b/src/ShellToken.sol
@@ -6,16 +6,21 @@ import "openzeppelin-contracts/contracts/access/Ownable.sol";
 
 contract ShellToken is ERC20, Ownable {
 
+    mapping(address => bool) public isAdmin;
+    mapping(address => uint) public multipler; //percentage out of 100
+
     mapping(address => bool) public allowedToTransfer;
 
     constructor() ERC20("ShellToken", "SHELL") Ownable(msg.sender) {
     }
 
-    function mintShells(address to, uint256 amount) public onlyOwner {
+    function mintShells(address to, uint256 amount) public {
+        require(isAdmin[msg.sender], "Not an admin");
         _mint(to, amount);
     }
 
-    function deleteShells(address from, uint256 amount) public onlyOwner {
+    function deleteShells(address from, uint256 amount) public {
+        require(isAdmin[msg.sender], "Not an admin");
         _burn(from, amount);
     }
 
@@ -29,5 +34,9 @@ contract ShellToken is ERC20, Ownable {
     function updateAllowedToTransfer(address user, bool allowed) public onlyOwner {
         allowedToTransfer[user] = allowed;
     }
+
+    function updateIsAdmin(address user, bool _isAdmin) public onlyOwner {
+        isAdmin[user] = _isAdmin;
+    }
 }