HiI have solved many problems with Apsheet. But I can not make applications for hotel management in any way. I do not understand how to work with the calendar. The problem is that I want to make the hotel owner see on the calendar which rooms are occ...

There is a table with a list of products and prices. There is a form for sales, how can I sell several types of goods to one customer through one sales form?

My application has two tables. The first table consists of a list of products with a unique ID and one column indicating which store they are in. The second table is for sale. It specifies the date, seller ID, and store ID. A third table, Sales Detai...