Install the plugin
Install the Keymosaic .lplug4 package through Logi Plugin Service, then restart the service if it does not appear in your action list.
Setup
From blank keys
to your canvas.
Keymosaic is designed to be configured once, then left alone. Your profile owns the keys; the plugin owns the frame.
Assign nine tile actions
In Options+, assign Keymosaic Tile 1 through Tile 9 to the nine keys of your MX Keypad. The active profile controls key ownership.
Open the editor
Assign Open Keymosaic to a convenient key, choose an image or GIF, adjust the crop, and press Apply to keypad.
One important boundary
Options+ decides which integration owns a key. Keymosaic cannot reserve a key against another plugin, so keep the nine tile actions assigned in the profile you use.