Added files of Alex and fixed the code.

UI/app/src/main/java/com/example/capstone/Settings.java

@@ -0,0 +1,70 @@
+package com.example.capstone;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+
+import com.google.firebase.auth.FirebaseAuth;
+
+public class Settings extends AppCompatActivity {
+    FirebaseAuth fAuth;
+    private Button dri, enr, sup, pas, abu;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_settings);
+        fAuth = FirebaseAuth.getInstance();
+
+        dri = findViewById(R.id.managedrivers);
+        enr = findViewById(R.id.enrollment);
+        sup = findViewById(R.id.support);
+        pas = findViewById(R.id.password);
+        abu = findViewById(R.id.aboutus);
+
+        dri.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startActivity(new Intent(getApplicationContext(), Drivers.class));
+            }
+        });
+
+        enr.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startActivity(new Intent(getApplicationContext(), Enrollment.class));
+            }
+        });
+
+        sup.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startActivity(new Intent(getApplicationContext(), Support.class));
+            }
+        });
+
+        pas.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startActivity(new Intent(getApplicationContext(), Password.class));
+            }
+        });
+
+        abu.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startActivity(new Intent(getApplicationContext(), About.class));
+            }
+        });
+
+    }
+
+    public void logout(View view){
+        fAuth.signOut();
+        startActivity(new Intent(getApplicationContext(), Login.class));
+        finish();
+    }
+}