diff --git a/src/gui_2.py b/src/gui_2.py
index 835777a..a85f0cf 100644
--- a/src/gui_2.py
+++ b/src/gui_2.py
@@ -1954,6 +1954,22 @@ class App:
   if self.controller and self.controller.engine:
    self.controller.engine.kill_worker(ticket_id)
 
+ def _cb_block_ticket(self, ticket_id: str) -> None:
+  t = next((t for t in self.active_tickets if str(t.get('id', '')) == ticket_id), None)
+  if t:
+   t['status'] = 'blocked'
+   t['manual_block'] = True
+   t['blocked_reason'] = '[MANUAL] User blocked'
+   self._push_mma_state_update()
+
+ def _cb_unblock_ticket(self, ticket_id: str) -> None:
+  t = next((t for t in self.active_tickets if str(t.get('id', '')) == ticket_id), None)
+  if t and t.get('manual_block', False):
+   t['status'] = 'todo'
+   t['manual_block'] = False
+   t['blocked_reason'] = None
+   self._push_mma_state_update()
+
  def _reorder_ticket(self, src_idx: int, dst_idx: int) -> None:
   if src_idx == dst_idx: return
   new_tickets = list(self.active_tickets)
@@ -2072,6 +2088,12 @@ class App:
     if status == 'in_progress':
      if imgui.button(f"Kill##{tid}"):
       self._cb_kill_ticket(tid)
+    elif status == 'todo':
+     if imgui.button(f"Block##{tid}"):
+      self._cb_block_ticket(tid)
+    elif status == 'blocked' and t.get('manual_block', False):
+     if imgui.button(f"Unblock##{tid}"):
+      self._cb_unblock_ticket(tid)
 
    imgui.end_table()