I have the same need, as a Home assistant user i switch between te UI’s from HA and Rachio.
Most what i plan to do from within HA:
. Quick runs (with a duration that can be set)
. Preventing to run a schedule with automation (‘hold’)
. Starting a schedule from automation HA (ideal would be to start a schedule at a time that HA decides , e.g. When the Solar panels provide much energy)
I will follow this,
Geert