multiple gcodes in a row which get printed after each other

I use the repetier host software it is nice and easy to work with!

is there a possibility like a plugin or something like that for series print ?

Like a list with multiple gcodes in a row which get printed after each other?

You come back to your printer after a day and it made the parts you put in the list?

In between the Software or the printer gives a signal to an arduino to control a fan and a part eject unit ?

is there something like that or any idea how to realize that ?

best regards
Christoph

How are you going to remove the printed part to free up the bed for the next print if you are not with the printer.
If the parts are small enough, better to load multiple pats on the bed before you slice them, and print all at the same time.

If the space is big enuff ( X Y Z )you can select print individual part and print