What is the action / field to change a document in a document library to the next \major Version\" upon doc workflow approval?"

Hello all,

I am new to Nintex and having a tough time working through my first workflow.  I am trying to create a simple review and Approval workflow for a document library.

1) Document gets put into review

2) A reviewer and checker either Approve or Reject the document

3) If both Approve: document gets published as next major version.

Does anyone have any insight into this or have any examples?

I am finding it difficult to find examples of workflows specific to document library workflows.

Thanks very much!

-Reid