diff --git a/backend/internal/handlers/global_state.go b/backend/internal/handlers/global_state.go
index 0f3fcc0..fea0dfd 100644
--- a/backend/internal/handlers/global_state.go
+++ b/backend/internal/handlers/global_state.go
@@ -33,6 +33,9 @@ type GlobalState interface {
 	// SignCollection(c *fiber.Ctx) error       // To sign a collection
 	GetButtonCount(c *fiber.Ctx) error       // For demonstration purposes
 	IncrementButtonCount(c *fiber.Ctx) error // For demonstration purposes
+	ListAllUsers(c *fiber.Ctx) error         // To get a list of all users in the application database
+	ListAllUsersProject(c *fiber.Ctx) error  // To get a list of all users for a specific project
+	ProjectRoleChange(c *fiber.Ctx) error    // To change a users role in a project
 }
 
 // "Constructor"
@@ -180,3 +183,45 @@ func (gs *GState) GetUserProjects(c *fiber.Ctx) error {
 	// Return a json serialized list of projects
 	return c.JSON(projects)
 }
+
+// ListAllUsers is a handler that returns a list of all users in the application database
+func (gs *GState) ListAllUsers(c *fiber.Ctx) error {
+	// Get all users from the database
+	users, err := gs.Db.GetAllUsersApplication()
+	if err != nil {
+		return c.Status(500).SendString(err.Error())
+	}
+
+	// Return the list of users as JSON
+	return c.JSON(users)
+}
+
+func (gs *GState) ListAllUsersProject(c *fiber.Ctx) error {
+	// Extract the project name from the request parameters or body
+	projectName := c.Params("projectName")
+
+	// Get all users associated with the project from the database
+	users, err := gs.Db.GetAllUsersProject(projectName)
+	if err != nil {
+		return c.Status(500).SendString(err.Error())
+	}
+
+	// Return the list of users as JSON
+	return c.JSON(users)
+}
+
+// ProjectRoleChange is a handler that changes a user's role within a project
+func (gs *GState) ProjectRoleChange(c *fiber.Ctx) error {
+	// Extract the necessary parameters from the request
+	username := c.Params("username")
+	projectName := c.Params("projectName")
+	role := c.Params("role")
+
+	// Change the user's role within the project in the database
+	if err := gs.Db.ChangeUserRole(username, projectName, role); err != nil {
+		return c.Status(500).SendString(err.Error())
+	}
+
+	// Return a success message
+	return c.SendStatus(fiber.StatusOK)
+}