Read only on New Mac

My external hard drives are read only and I cannot copy any new files on my new Mac. I tried changing permissions on the old computer but I still can’t add files to the hard drive on my new Mac

I have the same problem.
There’re four APFS options. Is one for read and write permission?

Apple Support over a call partitioned 1TB of 2TB on the EHD and now I’m able copy items over to that freed up space/memory.