I have scoured this site and browsed the functions but I can't figure this out.
Can regular expressions or logical operators be used in the parameters?
On a search of multiple fields, can one parameter be applied to one field while a second parameter is applied to a second field?
If so, can someone please point me to some examples?
If not, can you suggest the level of difficulty to implement this?
(I am only a casual php coder)
Thanks.

Not sure what parameters you mean. Dynamic albums are saved searches so created via such.
You can disable which fields you wish to use on the backend search options or on the search form on the them itslef (if it is display by the theme - on our site for example it is not).

You can also use boolean expressions like OR, AND, NOT etc (we lack some documentation on these) but you cannot target specific fields directly except setting those options.

Since a dynamic album is a text file (`<albumname>.alb`) on the filesytem it is possible though to do that manually. A typical dynamci album file content looks like this:
`
WORDS=something
THUMB=1
FIELDS=city,country,desc,location,state,tags,title
CONSTRAINTS=inalbums=1&inimages=1&unpublished=0
`