Hi
Please make sure you have the latest version of MarketFeeder
http://marketfeeder.co.uk/buy/Have a read of the manual section:
Auto-Trading > Import selections for auto-trading > Importing numeric and text values
to understand how to import selection and related data.
The attached text file shows your example selections in the format required (tab between selection name and lay amount)
The attached trigger file shows how to lay at the lay amount specified in the text file.
Please set the following setting for your timing requirement:
Settings > Monitoring Options > Market Refresh > Start monitoring events at 1 mins before the beginning.
Load your markets, then import selections according to the procedure shown in the manual, and then run the trigger.
Please use test mode while testing the trigger file.