[Dx4win] NPOTA - separating one log into multiple logs

[Mike Furrey]

Hi,I have been using DX4WIN version 7.04 for many years and it has served me very well. I operated as an activator in NPOTA the last couple of months and at the end of each day I typed my paper logs into DX4WIN as a single log. I need to separate the log into the various park units for upload to LotW because on some days I activated multiple units.
I thought this would be an easy process but I am stuck ... in "Filter" pull-down, the "Selection" and "Edit Group Names" are grayed-out. It appears this might be related to "Group" and I assigned a group number of "1" without any change. I am sure I am missing something simple here. Reading the manual I can't seem to find the right direction to go. Any help to get me in the right direction would be greatly appreciated (several chasers are a bit impatient).
Thanks es 73, Mike WA5POK