Possibility to choose where to put the 'add' and 'remove' buttons

[parktrip]

first, thanks for this very nice component !

I need to choose where to put the 'add' button that i would prefer to have it before the collection and also the 'remove' button that i would like to be part of my template for an entry row.
I didn't see this possibility in the documentation neither in the code itself.
Is it correct ?
Is there an easy way to achieve this ?
if not, would you accept a PR giving this possibility ?

Thanks in advance