To add a module to an existing module tile, click on the plus icon beside the module’s tab and the new module will be automatically added to that tile:
Adding a new module tile to your tablet’s workspace can be done by tapping the Add Modules double square icon in the bottom left corner of the screen:
Then tap the plus icon at the bottom of the screen and the available modules will be listed:
Next, select the module you wish to add by tapping it. The module will be added as a new tile at the bottom of the workspace:
Tapping the plus button will minimize the module selection bar and allow the module tiles to be rearranged the way you like:
Note that you can change the size of each module tile by tapping the bottom right corner of each tile and resize by dragging it: