In custom tiling, you can use the tile duplication function to duplicate the tiles. You can use the tile deletion function to delete the tiles. The operation steps are as follows:

1. Drag the tile into the canvas with the left mouse button - Right-click on the tile - Left-click to select Copy Tile;

2. Right-click on the canvas - Left-click to select Paste Tile;

3. To delete, select the tile and then click the Delete key to delete it