SalesPad Desktop supports all OmniPrice pricing that returns either a calculated price or a markdown percent. SalesPad Desktop does not support any OmniPrice pricing functionality that returns a markdown amount.
OmniPrice is set up within Dynamics GP - all that is required to integrate with SalesPad Desktop is to add our custom stored procedure (please note that this spcp is available as-is and may require development services to modify.) This also requires installation of the OmniPrice SQL API, which is free from the OmniPrice website.