Access these options in the main Controller, via Concord | What you see.
By default, Concord will sort a new concordance by the word to the left (L1) then the word to the right (R1), but you can set this to different values if you like. For further details, see Sorting a Concordance.
Show collocate zero frequencies
This toggles whether 0 or a blank (the default) is shown if a collocate frequency is zero.
You can choose different ways of seeing the data, and a whole set of choices as to what columns you want to display for each new concordance. You can re-instate any later if you wish by changing the Layout.
show full filename and path = sometimes you need to see the whole path but usually the filename alone will suffice.
cut redundant spaces = remove any double spaces
tag string only = show only context within two tag_string_only tags
pad search-word with spaces = insert a space to left and right of the search-word so it stands out better
hide undefined tags = hide those not defined in your tag file
hide tag file tags = hide all tags including undefined ones
hide words = show only the tags
Some of the options are visible here:
for example the sub-set visible shows an opportunity to blank out the search-word, to pad it with a space left & right, to shift the search-word left or right.