I allow the use of foxuser.dbf in my apps for many reasons. However, on all of my systems, each user's foxuser file is stored in their home directory so they are not shared. This is setup in the app's main app object (or main.prg if you don't use objects). If you attempt to share it (which you can) then it is read only and that is undesireable.
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"When the debate is lost, slander becomes the tool of the loser." - Socrates
Vita contingit, Vive cum eo. (Life Happens, Live With it.)
"Life is not measured by the number of breaths we take, but by the moments that take our breath away." -- author unknown
"De omnibus dubitandum"