I don't believe this is possible, but I figure it can't hurt to ask.
I don't think it can be done !
#TASK has a merge drawings function for free(standard users)
you might be able to find a way to make this work for you in order to have 2 people work on separate sheets
I suggest purchasing a PDM. Working on drawings simultaneously then merging is not good practice. Files can be lost or inadvertently written over.
You can always copy and paste sheet(s) from one drawing to another but sometimes the dimensions or annotations go dangling.
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