How to create Day Rate and Monthly Rate for services provided so they can be invoiced that way

[RisingC]

I provide training and boarding of horses, and would like to be able to charge a Flat Monthly Rate and a Flat Daily rate for these services.   I would like to know how I can do this or if this could be an added option.   I utilize the invoicing thru square and this is definitely a feature that I feel should be an option and would make my invoicing much easier!

[RisingC]

I would like to add to the above request......   currently it is listed as "Duration" ........  I would like to have the option of Day and Month selection as well - not just the hour and minutes 🙂