Checked In Documents By Other person who hasn't checked out

Experts,

I am new to Solution Manager (SM) and I have a requirement in SM. My limited understanding of SM is if a person checked out a document from SM, then only that person will be able to check in the same document after correction. But I have been asked to look whether the check in option can be done others as well but not restricted to the same person who checked out. Any ideas / suggestions please.

Advance Thanks

Ramesh