This is one of the most requested features by our users !
To copy an existing agenda item on a workspace to another workspace/s, simply open the workspace, locate the agenda item, and hover over to the right side of the agenda item. Three little dots will then appear and clicking on them will open up a drop-down, select "Copy to"
This will open up all the workspaces that you are part of. Checkmark the workspace/s that you would like to add the agenda item and confirm. This will immediately add the agenda item to the workspace/s that was marked.