How to export cvs file in excel in separate column

hi. when i export cvs file and opened in excel , i found the data only in column A, whit separator. In your demo every column from woocommerce exports as single column in excel.
How can I make a variation in the plugin. Only find there is option for variation product but nothing more.
Where I can find a documentation for Excel-like product manager multi-import and how can I exort/ import xls files as you mentioned in the base plugin

I found how it works with xls files, tried some imports.
Please tell me one more thing, why when i import file , on the name of the product displays some kind of date.
Let me explain what i was did.
1. Set the columns to export.
2. Export the file vs the xls extention.
3. Make some changes in the data, and clear the ID - to append the new data in woocommerce.
4. Import the new file in the plugin.
Did not delete or change names of the columns.
After this in the name of the products there is some sort of date format instead product names

And the next thing is How i can handle with variations.

If you have some documentation or examples please tell me. I can give you xls of csv file to see to.
I I can not handle with this two things this plugin will be useless for me