I am remodeling my bathroom and plan to move the location of the toilet. In looking at the current drain setup, the toilet is the closest to the main drain with the lavatory and shower at the farthest in this branch. Is it possible to switch the branch to have the toilet as the farthest and then have the shower and lavatory drain into that branch before it go into the main drain?

Thanks.

Sure if your code will allow wet vents. You may move the toilet and have the shower connect to the lavatory drain which will be tied back to the toilet branch.
The shower will be wet vented by the lavatory vent through the roof. Good luck, tom