After an item is created you can always change the region in which the item is placed.
Go to the item screen for the subject meeting.
On the left side of the screen, find the Item Data block.
Find the region. If your access privileges allow you to change the region, a Region link appears below the region name.
Click the link to display a drop-down list of regions in which you can place the item.
Choose the new region and click the Change Region button.