diff --git a/controllers/posController.go b/controllers/posController.go
index 43b6575..f51dcb2 100644
--- a/controllers/posController.go
+++ b/controllers/posController.go
@@ -816,13 +816,16 @@ func (ctl *PosController) WebPosRoles(c *fiber.Ctx) error {
 		"details": []fiber.Map{
 			{
 				"role_id": models.PosRoleSupervisor, "role": "supervisor",
-				"label":       models.PosRoleName(models.PosRoleSupervisor),
-				"description": "Runs the terminal and creates counter staff. Also signs into the app.",
+				"label": models.PosRoleName(models.PosRoleSupervisor),
+				"description": "Runs the terminal: imports, settings, voids, and " +
+					"creating counter staff. Signs in at a till only — a till " +
+					"account has no Nearle Daily login.",
 			},
 			{
 				"role_id": models.PosRoleCashier, "role": "cashier",
-				"label":       models.PosRoleName(models.PosRoleCashier),
-				"description": "Billing only.",
+				"label": models.PosRoleName(models.PosRoleCashier),
+				"description": "Billing only. Signs in at a till with their own username " +
+					"and password, so a shop can open without a supervisor present.",
 			},
 		},
 	})