Locate the node that has the enrollment module installed.  This is done by expanding NODES in the configuration ui. It will look similar to this.

Add parameter "settingsURL" with the value of where settings can be downloaded. Note the the url entered must be available from the device used in the enrollment

Commit changes. No reboot needed.

Verify by enrolling a Pocket Pass profile.

The settings file is in json format.

An example:

{
"image_background_portrait":"http://www.company.com/portrait.jpg",
"image_background_landscape":"http://www.company.com/landscape.jpg",
"color_text":"#ffffffff",
"color_text_shadow":"#ff444444",
"color_timebar":"#ffffffff",
"color_timebar_background":"#ff333333",
"color_button_text":"#ff000000",
"color_button_background":"#ffffffff"
}

Images

Images must be exactly the size specified below, and in jpeg or png format. Jpeg is probably the best choice due to its smaller size.

Colors

The format of all colors must be #aarrggbb. The aa (alpha-value) of the color is preferably set to ff.

Description of the parameters:

image_background_portrait - required

The background image used in portrait mode. The image size must be 720x1280 pixels.

image_background_landscape - required

The background image used in landscape mode. The image size must be 1280x720 pixels.

color_text - required

The color of the one-time password text.

color_text_shadow - required

The color of the one-time password text shadow.

color_timebar - required

The color of the one-time password time bar (When using time-based one-time passwords).

color_timebar_background - required

The background color of the one-time password time bar.

color_button_text - required

The color of the one-time password button text (When using counter-based one-time passwords).

color_button_background - required

The background color of the one-time password button text.