  Given a smooth partial action $\alpha$ of a Lie groupoid $G$ on a smooth
manifold $M,$ we provide necessary and sufficient conditions for $\alpha$ to be
globalizable with smooth globalization. As an application, we provide results
on the differentiable structure of orbit and stabilizer spaces induced by
$\alpha,$ which leads to other criteria for its globalization in terms of its
orbit maps in the case that $\alpha$ is free and transitive. Further, under the
assumption that $\alpha$ is free and proper, we prove that there exists exactly
one differentiable structure on the quotient structure of the orbit equivalence
space $M/G$ such that the quotient map $\pi:M\to M/G$ is a submersion
