Note: 

1. Users with permission to edit the item can block the item
   
2. The user who blocked the item can unblock the item
   
3. Admin user, sprint owner, project owner, and workspace owner can unblock the item
   
4. Users will be allowed to add comments alone when the item is blocked
   

Block item

1. Open the required project.
   
2. Go to the Backlog, Sprint, Board, Release, or Epic where the item is present.
   
   
3. Go to the item details page.
   
4. Click the Block option at the top. The Block window will appear.
   
5. Enter the reason for blocking.
   
6. Click the Block button. The item will be blocked, disallowing all actions on the item.
   

Note: Click the Block history icon on the right navigation bar in the item details page to view history.

1. Open the required project.
   
2. Go to the Backlog, Sprint, Board, Epic, or Release where the item is present.
   
3. Go to the item details page.
   
4. Click the Block option at the top. The Block window will appear.
   
5. Select Enable Schedule Unblock.
   
6. Select the date and time of unblocking.
   
   
7. Enter a reason and click Block. The item will be blocked until the specified time. Once that time is reached, the item will automatically be unblocked and available to users to update.

Unblock item

1. Go to the item details page and click Unblock. Enter a reason and click the Unblock button.
   
2. Go to the item card and click the Unblock button.