Userform for Multi-Page Data Entry

Trying to create a userform that can be used for data entry. Based on selections on the userform it will go to a certain sheet, column and row. The sheet selection is a textbox. The column is based on the month selected, and the row is based on the day and another variable. Just need some help getting started. I do not know how to create a if then statement with three/four different variables. They will also have two text boxes to enter two numbers that will be inputted in the location desired, those numbers are also converted in the process to another unit.

post a sample file....

Okay here is a sample, there are a lot more sheets in the actual file. So basically the day will tell me the row, but also the tray tells me which row also. The month will tell me the two columns. The Op No tells me which sheet. The top and bottom are the data being inputted. Thanks

small sample.xlsm

In desperate need, please help!

Refer the thread

"Need a range of information to be copied to specific sheet if criteria is met"

Thank you! Just one question is there a way to select a column based on their selection in the form, and select a row based on a different selection. Then from that row and column find the cell where they intersect to make that the activecell?