Do you want to create a separate form that users can use to modify their records? Or are you asking about what the proper permissions should be?
If you asking about the latter, then the better source to read is JPDeni's DBMAN-ual site:
www.jpdeni.com/dbman/ Regards,
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Eliot Lee
Founder and Editor
Anthro TECH, L.L.C
http://www.anthrotech.com/
info@anthrotech.com
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Coconino Community College
http://www.coco.cc.az.us/
Web Technology
Coordinator
elee@coco.cc.az.us