Added a slider for RF Gain and changed the IPO (internal preamp) button so that it now sequences PA On - PA Off - Attenuator On - PA On.
Although these controls are specifically for the Yaesu FT-891, they can probably be used for the FT-991 with minor modifications. They can probably also be used with Kenwood radios with minor modifications as the Kenwood CAT language is very similar to the Yaesu language.
For anyone wishing to set up user defined buttons and sliders, the logic in these might serve as a guide in that many of the items interact with each other.