Copying Schematic Sheets

It's really kinda sad that Altium doesn't have the ability to copy or duplicate sheets within the Altium interface.

A workaround is to copy a schematic within your file browser, change the name, then import that as an existing document to your project:

1. right click on the project in the Projects panel
2. select "Add Existing to project...", 
3. select the new file 
4. save the project

This way it is also setup the exact same way as your other schematic sheets.

When you're done importing new sheets, don't forget to do the following to renumber the pages:

1. Open the Sheet Numbering dialog (tat)
2. run Auto Sheet number (s), Auto Document Number (n), and Update Sheet Count (c).