Moving on from the table edge from reserve, into models...
2 situations I have questions about:

I have units deployed right on the table edge... Opponent wants to bring on models from reserve directly into that area...

Situation 1) they are infantry... the only way they can get on is for them to be placed within 1" of my models... Since this is the movement phase, rather than the assult phase, is this allowed? if not is the unit unable to enter the table at this point?

Situation 2) they are tanks... can they tank-shock as they enter the table?